1
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Liu Y, Lin YS. Stretchable Dual-Axis Terahertz Bifocal Metalens with Flexibly Polarization-Dependent Focal Position and Direction. ACS APPLIED MATERIALS & INTERFACES 2024; 16:34338-34348. [PMID: 38900966 DOI: 10.1021/acsami.4c04504] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/22/2024]
Abstract
Varifocal lenses are essential components in any optical system, while traditional lenses suffer from bulky volume, fixed focal position, and limited working spectra. As well-arranged subwavelength structures, metalenses overcome the abovementioned obstacles and exhibit merits of ultrathin thickness, flexible focal length, and multifocus. The electromagnetic responses of metasurfaces, including metalens, rely on the phase distributions of phase-shifting elements. The steerable focal direction is investigated to obtain the combinations of focusing and anomalous refraction phase distribution. To fully explore the flexibility of focal length and direction, seven designs of double layers of terahertz (THz) bifocal metalenses are proposed and investigated in this study. They exhibit dependent and independent relationships of tunable focal length and direction with flexible tuning mechanisms. Along with polarization multiplexing, two different focuses can be obtained when the incident waves are x-linear and y-linear polarization states, respectively. The simulation results agreed well with the theoretical predictions. These designs provide a new method to modulate the focal position precisely with promising applications in wireless communication, imaging, and on-chip optical integration systems.
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Affiliation(s)
- Yuxin Liu
- School of Electronics and Information Technology, Sun Yat-Sen University, Guangzhou 510006, China
| | - Yu-Sheng Lin
- School of Electronics and Information Technology, Sun Yat-Sen University, Guangzhou 510006, China
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2
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Qin Y, Guo H, Pazos S, Xu M, Yan X, Qiao J, Wang J, Zhou P, Chai Y, Hu W, Zhu Z, Li Z, Wen H, Ma Z, Li X, Lanza M, Tang J, Tian H, Liu J. 7D High-Dynamic Spin-Multiplexing. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024:e2402378. [PMID: 38940415 DOI: 10.1002/advs.202402378] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/05/2024] [Revised: 05/31/2024] [Indexed: 06/29/2024]
Abstract
Multiplexing technology creates several orthogonal data channels and dimensions for high-density information encoding and is irreplaceable in large-capacity information storage, and communication, etc. The multiplexing dimensions are constructed by light attributes and spatial dimensions. However, limited by the degree of freedom of interaction between light and material structure parameters, the multiplexing dimension exploitation method is still confused. Herein, a 7D Spin-multiplexing technique is proposed. Spin structures with four independent attributes (color center type, spin axis, spatial distribution, and dipole direction) are constructed as coding basic units. Based on the four independent spin physical effects, the corresponding photoluminescence wavelength, magnetic field, microwave, and polarization are created into four orthogonal multiplexing dimensions. Combined with the 3D of space, a 7D multiplexing method is established, which possesses the highest dimension number compared with 6 dimensions in the previous study. The basic spin unit is prepared by a self-developed laser-induced manufacturing process. The free state information of spin is read out by four physical quantities. Based on the multiple dimensions, the information is highly dynamically multiplexed to enhance information storage efficiency. Moreover, the high-dynamic in situ image encryption/marking is demonstrated. It implies a new paradigm for ultra-high-capacity storage and real-time encryption.
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Affiliation(s)
- Yue Qin
- State Key Laboratory of Dynamic Measurement Technology, Shanxi Province Key Laboratory of Quantum Sensing and Precision Measurement, North University of China, Taiyuan, 030051, P. R. China
| | - Hao Guo
- State Key Laboratory of Dynamic Measurement Technology, Shanxi Province Key Laboratory of Quantum Sensing and Precision Measurement, North University of China, Taiyuan, 030051, P. R. China
| | - Sebastian Pazos
- Materials Science and Engineering Program, Physical Science and Engineering Division, King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Saudi Arabia
| | - Mengzhen Xu
- State Key Laboratory of Hydroscience and Engineering, Tsinghua University, Beijing, 100084, China
| | - Xiaobing Yan
- National-Local Joint Engineering Laboratory of New Energy Photovoltaic Devices, Key Laboratory of Brain-Like Neuromorphic Devices and Systems of Hebei Province, College of Electron and Information Engineering, Hebei University, Baoding, 071002, China
| | - Jianzhong Qiao
- School of Automation Science and Electrical Engineering, Beihang University, Beijing, 100191, China
| | - Jia Wang
- State Key Laboratory of Dynamic Measurement Technology, Shanxi Province Key Laboratory of Quantum Sensing and Precision Measurement, North University of China, Taiyuan, 030051, P. R. China
| | - Peng Zhou
- State Key Laboratory of ASIC and System, School of Microelectronics, Fudan University, Shanghai, 200433, China
| | - Yang Chai
- Department of Applied Physics, The Hong Kong Polytechnic University, Hong Kong, 999077, China
| | - Weida Hu
- State Key Laboratory for Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, Shanghai, 200083, China
| | - Zhengqiang Zhu
- School of Integrated Circuits and Beijing National Research Center for Information Science and Technology (BNRist), Tsinghua University, Beijing, 100084, China
- Beijing Institute of Aerospace Control Devices, Beijing, 100094, China
| | - Zhonghao Li
- State Key Laboratory of Dynamic Measurement Technology, Shanxi Province Key Laboratory of Quantum Sensing and Precision Measurement, North University of China, Taiyuan, 030051, P. R. China
| | - Huanfei Wen
- State Key Laboratory of Dynamic Measurement Technology, Shanxi Province Key Laboratory of Quantum Sensing and Precision Measurement, North University of China, Taiyuan, 030051, P. R. China
| | - Zongmin Ma
- State Key Laboratory of Dynamic Measurement Technology, Shanxi Province Key Laboratory of Quantum Sensing and Precision Measurement, North University of China, Taiyuan, 030051, P. R. China
| | - Xin Li
- State Key Laboratory of Dynamic Measurement Technology, Shanxi Province Key Laboratory of Quantum Sensing and Precision Measurement, North University of China, Taiyuan, 030051, P. R. China
| | - Mario Lanza
- Materials Science and Engineering Program, Physical Science and Engineering Division, King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Saudi Arabia
| | - Jun Tang
- State Key Laboratory of Dynamic Measurement Technology, Shanxi Province Key Laboratory of Quantum Sensing and Precision Measurement, North University of China, Taiyuan, 030051, P. R. China
| | - He Tian
- School of Integrated Circuits and Beijing National Research Center for Information Science and Technology (BNRist), Tsinghua University, Beijing, 100084, China
| | - Jun Liu
- State Key Laboratory of Dynamic Measurement Technology, Shanxi Province Key Laboratory of Quantum Sensing and Precision Measurement, North University of China, Taiyuan, 030051, P. R. China
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3
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Pan K, Wu X, Li P, Liu S, Wei B, Li D, Yang D, Chen X, Zhao J, Wen D. Cylindrical Vector Beam Holography without Preservation of OAM Modes. NANO LETTERS 2024; 24:6761-6766. [PMID: 38775803 DOI: 10.1021/acs.nanolett.4c01490] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2024]
Abstract
Orbital angular momentum (OAM) multiplexed holograms have attracted a great deal of attention recently due to their physically unbounded set of orthogonal helical modes. However, preserving the OAM property in each pixel hinders fine sampling of the target image in principle and requires a fundamental filtering aperture array in the detector plane. Here, we demonstrate the concept of metasurface-based vectorial holography with cylindrical vector beams (CVBs), whose unlimited polarization orders and unique polarization distributions can be used to boost information storage capacity. Although CVBs are composed of OAM modes, the holographic images do not preserve the OAM modes in our design, enabling fine sampling of the target image in a quasi-continuous way like traditional computer-generated holograms. Moreover, the images can be directly observed by passing them through a polarizer without the need for a fundamental mode filter array. We anticipate that our method may pave the way for high-capacity holographic devices.
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Affiliation(s)
- Kai Pan
- Key Laboratory of Light Field Manipulation and Information Acquisition, Ministry of Industry and Information Technology, and Shaanxi Key Laboratory of Optical Information Technology, School of Physical Science and Technology, Northwestern Polytechnical University, Xi'an 710129, China
| | - Xuanguang Wu
- Key Laboratory of Light Field Manipulation and Information Acquisition, Ministry of Industry and Information Technology, and Shaanxi Key Laboratory of Optical Information Technology, School of Physical Science and Technology, Northwestern Polytechnical University, Xi'an 710129, China
| | - Peng Li
- Key Laboratory of Light Field Manipulation and Information Acquisition, Ministry of Industry and Information Technology, and Shaanxi Key Laboratory of Optical Information Technology, School of Physical Science and Technology, Northwestern Polytechnical University, Xi'an 710129, China
| | - Sheng Liu
- Key Laboratory of Light Field Manipulation and Information Acquisition, Ministry of Industry and Information Technology, and Shaanxi Key Laboratory of Optical Information Technology, School of Physical Science and Technology, Northwestern Polytechnical University, Xi'an 710129, China
| | - Bingyan Wei
- Key Laboratory of Light Field Manipulation and Information Acquisition, Ministry of Industry and Information Technology, and Shaanxi Key Laboratory of Optical Information Technology, School of Physical Science and Technology, Northwestern Polytechnical University, Xi'an 710129, China
| | - Dong Li
- Key Laboratory of Light Field Manipulation and Information Acquisition, Ministry of Industry and Information Technology, and Shaanxi Key Laboratory of Optical Information Technology, School of Physical Science and Technology, Northwestern Polytechnical University, Xi'an 710129, China
| | - Dexing Yang
- Key Laboratory of Light Field Manipulation and Information Acquisition, Ministry of Industry and Information Technology, and Shaanxi Key Laboratory of Optical Information Technology, School of Physical Science and Technology, Northwestern Polytechnical University, Xi'an 710129, China
| | - Xianzhong Chen
- Institute of Photonics and Quantum Sciences, School of Engineering and Physical Sciences, Heriot-Watt University, Edinburgh EH14 4AS, U.K
| | - Jianlin Zhao
- Key Laboratory of Light Field Manipulation and Information Acquisition, Ministry of Industry and Information Technology, and Shaanxi Key Laboratory of Optical Information Technology, School of Physical Science and Technology, Northwestern Polytechnical University, Xi'an 710129, China
| | - Dandan Wen
- Key Laboratory of Light Field Manipulation and Information Acquisition, Ministry of Industry and Information Technology, and Shaanxi Key Laboratory of Optical Information Technology, School of Physical Science and Technology, Northwestern Polytechnical University, Xi'an 710129, China
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4
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Kim J, Im JH, So S, Choi Y, Kang H, Lim B, Lee M, Kim YK, Rho J. Dynamic Hyperspectral Holography Enabled by Inverse-Designed Metasurfaces with Oblique Helicoidal Cholesterics. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024; 36:e2311785. [PMID: 38456592 DOI: 10.1002/adma.202311785] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/07/2023] [Revised: 02/16/2024] [Indexed: 03/09/2024]
Abstract
Metasurfaces are flat arrays of nanostructures that allow exquisite control of phase and amplitude of incident light. Although metasurfaces offer new active element for both fundamental science and applications, the challenge still remains to overcome their low information capacity and passive nature. Here, by integrating an inverse-designed-metasurface with oblique helicoidal cholesteric liquid crystal (ChOH), simultaneous spatial and spectral tunable metasurfaces with a high information capacity for dynamic hyperspectral holography, are demonstrated. The inverse design facilitates a single-phase map encoding of ten independent holographic images at different wavelengths. ChOH provides precise spectral modulation with narrow bandwidth and wide tunable regime in response to programmed stimuli, thus enabling dynamic switching of the multicolor holography. The results provide simple and generalizable principles for the rational design of interactive metasurfaces that will find numerous applications, including security platform.
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Affiliation(s)
- Joohoon Kim
- Department of Mechanical Engineering, Pohang University of Science and Technology (POSTECH), Pohang, 37673, Republic of Korea
| | - Jun-Hyung Im
- Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH), Pohang, 37673, Republic of Korea
| | - Sunae So
- Department of Mechanical Engineering, Pohang University of Science and Technology (POSTECH), Pohang, 37673, Republic of Korea
- Graduate School of Artificial Intelligence, Pohang University of Science and Technology (POSTECH), Pohang, 37673, Republic of Korea
- Department of Control and Instrumentation Engineering, Korea University, Sejong, 30019, Republic of Korea
| | - Yeongseon Choi
- Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH), Pohang, 37673, Republic of Korea
| | - Hyunjung Kang
- Department of Mechanical Engineering, Pohang University of Science and Technology (POSTECH), Pohang, 37673, Republic of Korea
| | - Bogyu Lim
- Department of Engineering Chemistry, Chungbuk National University, Cheongju, 28644, Republic of Korea
| | - Minjae Lee
- Department of Chemistry, Kunsan National University, Gunsan, 54150, Republic of Korea
| | - Young-Ki Kim
- Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH), Pohang, 37673, Republic of Korea
| | - Junsuk Rho
- Department of Mechanical Engineering, Pohang University of Science and Technology (POSTECH), Pohang, 37673, Republic of Korea
- Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH), Pohang, 37673, Republic of Korea
- Department of Electrical Engineering, Pohang University of Science and Technology (POSTECH), Pohang, 37673, Republic of Korea
- POSCO-POSTECH-RIST Convergence Research Center for Flat Optics and Metaphotonics, Pohang, 37673, Republic of Korea
- National Institute of Nanomaterials Technology (NINT), Pohang, 37673, Republic of Korea
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5
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Xie M, Xiong B, Chu T. Realizing highly efficient vertical coupling with dielectric deflective metasurfaces. OPTICS LETTERS 2024; 49:3182-3185. [PMID: 38824358 DOI: 10.1364/ol.524721] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/26/2024] [Accepted: 05/13/2024] [Indexed: 06/03/2024]
Abstract
Using dielectric deflective metasurfaces, we propose a novel, to the best of our knowledge, out-of-plane modulation scheme to realize vertical coupling on a 220 nm silicon-on-insulator platform. The metasurface is used to deflect vertical incident light to an oblique angle with high efficiency in the cladding layer. This deflection introduces a lateral wave vector component, thus preventing bi-directional transmission of traditional vertical coupling due to the second-order Bragg reflection of the grating. Additionally, an apodized design is employed for the subwavelength grating to improve mode matching with a deflection angle incident. The integration of the metasurface and subwavelength grating enables a new vertical coupling scheme with high efficiency. After global optimization, we achieved a simulation coupling efficiency of -2.19 dB. The measured coupling efficiency is -3.36 dB with a center wavelength of 1545.6 nm and a 1-dB bandwidth of 32 nm. The results confirm the feasibility of the proposed new architecture.
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6
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Li R, Ma J, Li D, Wu Y, Qian C, Zhang L, Chen H, Kottos T, Li EP. Non-Invasive Self-Adaptive Information States' Acquisition inside Dynamic Scattering Spaces. RESEARCH (WASHINGTON, D.C.) 2024; 7:0375. [PMID: 38826565 PMCID: PMC11140760 DOI: 10.34133/research.0375] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/03/2024] [Accepted: 04/12/2024] [Indexed: 06/04/2024]
Abstract
Pushing the information states' acquisition efficiency has been a long-held goal to reach the measurement precision limit inside scattering spaces. Recent studies have indicated that maximal information states can be attained through engineered modes; however, partial intrusion is generally required. While non-invasive designs have been substantially explored across diverse physical scenarios, the non-invasive acquisition of information states inside dynamic scattering spaces remains challenging due to the intractable non-unique mapping problem, particularly in the context of multi-target scenarios. Here, we establish the feasibility of non-invasive information states' acquisition experimentally for the first time by introducing a tandem-generated adversarial network framework inside dynamic scattering spaces. To illustrate the framework's efficacy, we demonstrate that efficient information states' acquisition for multi-target scenarios can achieve the Fisher information limit solely through the utilization of the external scattering matrix of the system. Our work provides insightful perspectives for precise measurements inside dynamic complex systems.
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Affiliation(s)
- Ruifeng Li
- Zhejiang University–University of Illinois at Urbana-Champaign Institute,
Zhejiang University, Haining 314400, China
- College of Information Science and Electronic Engineering,
Zhejiang University, Hangzhou 310027, China
| | - Jinyan Ma
- Zhejiang University–University of Illinois at Urbana-Champaign Institute,
Zhejiang University, Haining 314400, China
- College of Information Science and Electronic Engineering,
Zhejiang University, Hangzhou 310027, China
| | - Da Li
- Zhejiang University–University of Illinois at Urbana-Champaign Institute,
Zhejiang University, Haining 314400, China
- College of Information Science and Electronic Engineering,
Zhejiang University, Hangzhou 310027, China
| | - Yunlong Wu
- Zhejiang University–University of Illinois at Urbana-Champaign Institute,
Zhejiang University, Haining 314400, China
- College of Information Science and Electronic Engineering,
Zhejiang University, Hangzhou 310027, China
| | - Chao Qian
- Zhejiang University–University of Illinois at Urbana-Champaign Institute,
Zhejiang University, Haining 314400, China
- College of Information Science and Electronic Engineering,
Zhejiang University, Hangzhou 310027, China
| | - Ling Zhang
- Zhejiang University–University of Illinois at Urbana-Champaign Institute,
Zhejiang University, Haining 314400, China
- College of Information Science and Electronic Engineering,
Zhejiang University, Hangzhou 310027, China
| | - Hongsheng Chen
- Zhejiang University–University of Illinois at Urbana-Champaign Institute,
Zhejiang University, Haining 314400, China
- College of Information Science and Electronic Engineering,
Zhejiang University, Hangzhou 310027, China
| | - Tsampikos Kottos
- Wave Transport in Complex Systems Lab, Department of Physics,
Wesleyan University, Middletown, CT 06459, USA
| | - Er-Ping Li
- Zhejiang University–University of Illinois at Urbana-Champaign Institute,
Zhejiang University, Haining 314400, China
- College of Information Science and Electronic Engineering,
Zhejiang University, Hangzhou 310027, China
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7
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Wang T, Wang Y, Fu Y, Chen Z, Jiang C, Ji YE, Lu Y. Angle-Multiplexed 3D Photonic Superstructures with Multi-Directional Switchable Structural Color for Information Transformation, Storage, and Encryption. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024:e2400442. [PMID: 38757669 DOI: 10.1002/advs.202400442] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/06/2024] [Revised: 04/12/2024] [Indexed: 05/18/2024]
Abstract
Creating photonic crystals that can integrate and switch between multiple structural color images will greatly advance their utility in dynamic information transformation, high-capacity storage, and advanced encryption, but has proven to be highly challenging. Here, it is reported that by programmably integrating newly developed 1D quasi-periodic folding structures into a 3D photonic crystal, the generated photonic superstructure exhibits distinctive optical effects that combine independently manipulatable specular and anisotropic diffuse reflections within a versatile protein-based platform, thus creating different optical channels for structural color imaging. The polymorphic transition of the protein format allows for the facile modulation of both folding patterns and photonic lattices and, therefore, the superstructure's spectral response within each channel. The capacity to manipulate the structural assembly of the superstructure enables the programmable encoding of multiple independent patterns into a single system, which can be decoded by the simple adjustment of lighting directions. The multifunctional utility of the photonic platform is demonstrated in information processing, showcasing its ability to achieve multimode transformation of information codes, multi-code high-capacity storage, and high-level numerical information encryption. The present strategy opens new pathways for achieving multichannel transformable imaging, thereby facilitating the development of emerging information conversion, storage, and encryption media using photonic crystals.
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Affiliation(s)
- Tao Wang
- National Laboratory of Solid State Microstructures, Key Laboratory of Intelligent Optical Sensing and Manipulation, College of Engineering and Applied Sciences, and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, 210023, China
| | - Yu Wang
- National Laboratory of Solid State Microstructures, Key Laboratory of Intelligent Optical Sensing and Manipulation, College of Engineering and Applied Sciences, and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, 210023, China
| | - Yinghao Fu
- National Laboratory of Solid State Microstructures, Key Laboratory of Intelligent Optical Sensing and Manipulation, College of Engineering and Applied Sciences, and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, 210023, China
| | - Zhaoxian Chen
- National Laboratory of Solid State Microstructures, Key Laboratory of Intelligent Optical Sensing and Manipulation, College of Engineering and Applied Sciences, and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, 210023, China
| | - Chang Jiang
- National Laboratory of Solid State Microstructures, Key Laboratory of Intelligent Optical Sensing and Manipulation, College of Engineering and Applied Sciences, and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, 210023, China
| | - Yue-E Ji
- National Laboratory of Solid State Microstructures, Key Laboratory of Intelligent Optical Sensing and Manipulation, College of Engineering and Applied Sciences, and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, 210023, China
| | - Yanqing Lu
- National Laboratory of Solid State Microstructures, Key Laboratory of Intelligent Optical Sensing and Manipulation, College of Engineering and Applied Sciences, and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, 210023, China
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8
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Wang B, Wei R, Shi H, Bao Y. Dynamic Spatial-Selective Metasurface with Multiple-Beam Interference. NANO LETTERS 2024; 24:5886-5893. [PMID: 38687301 DOI: 10.1021/acs.nanolett.4c01254] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/02/2024]
Abstract
The emergence of the metasurface has provided a versatile platform for the manipulation of light at the nanoscale. Recent research in metasurfaces has explored a plethora of dynamic control and switching of multifunctionalities, paving the way for innovative applications in fields such as imaging, sensing, and communication. However, current dynamic multifunctional metasurfaces face challenges in terms of functional scalability and selective activation. In this work, we introduce and experimentally demonstrate a strategy that utilizes multiple plane waves to create arbitrary periodic patterns on the metasurface, thus enabling the dynamic and arbitrary spatial-selective activation of its embedded multiplexed functionalities. Furthermore, our strategy facilitates dynamic light control through mechanical translation, as demonstrated by a high-speed, dynamically switchable beam deflection scenario. Our method effectively overcomes the limitations associated with traditional spatially multiplexing techniques, offering greater flexibility and selectivity for dynamic control in multifunctional metasurfaces.
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Affiliation(s)
- Boyou Wang
- Guangdong Provincial Key Laboratory of Nanophotonic Manipulation, Institute of Nanophotonics, College of Physics & Optoelectronic Engineering, Jinan University, Guangzhou 511443, China
| | - Rui Wei
- Guangdong Provincial Key Laboratory of Nanophotonic Manipulation, Institute of Nanophotonics, College of Physics & Optoelectronic Engineering, Jinan University, Guangzhou 511443, China
| | - Hongsheng Shi
- Guangdong Provincial Key Laboratory of Nanophotonic Manipulation, Institute of Nanophotonics, College of Physics & Optoelectronic Engineering, Jinan University, Guangzhou 511443, China
| | - Yanjun Bao
- Guangdong Provincial Key Laboratory of Nanophotonic Manipulation, Institute of Nanophotonics, College of Physics & Optoelectronic Engineering, Jinan University, Guangzhou 511443, China
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9
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Xin YH, Hu KM, Yin HZ, Deng XL, Dong ZQ, Yan SZ, Jiang XS, Meng G, Zhang WM. Dynamic Optical Encryption Fueled via Tunable Mechanical Composite Micrograting Systems. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024; 36:e2312650. [PMID: 38339884 DOI: 10.1002/adma.202312650] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/24/2023] [Revised: 01/18/2024] [Indexed: 02/12/2024]
Abstract
Optical grating devices based on micro/nanostructured functional surfaces are widely employed to precisely manipulate light propagation, which is significant for information technologies, optical data storage, and light sensors. However, the parameters of rigid periodic structures are difficult to tune after manufacturing, which seriously limits their capacity for in situ light manipulation. Here, a novel anti-eavesdropping, anti-damage, and anti-tamper dynamic optical encryption strategy are reported via tunable mechanical composite wrinkle micrograting encryption systems (MCWGES). By mechanically composing multiple in-situ tunable ordered wrinkle gratings, the dynamic keys with large space capacity are generated to obtain encrypted diffraction patterns, which can provide a higher level of security for the encrypted systems. Furthermore, a multiple grating cone diffraction model is proposed to reveal the dynamic optical encryption principle of MCWGES. Optical encryption communication using dynamic keys has the effect of preventing eavesdropping, damage, and tampering. This dynamic encryption method based on optical manipulation of wrinkle grating demonstrates the potential applications of micro/nanostructured functional surfaces in the field of information security.
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Affiliation(s)
- Yi-Hang Xin
- State Key Laboratory of Mechanical System and Vibration, School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Kai-Ming Hu
- State Key Laboratory of Mechanical System and Vibration, School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Hao-Zhe Yin
- State Key Laboratory of Mechanical System and Vibration, School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Xin-Lu Deng
- State Key Laboratory of Mechanical System and Vibration, School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Zhi-Qi Dong
- State Key Laboratory of Mechanical System and Vibration, School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Shu-Zhen Yan
- School of Chemistry and Chemical Engineering, State Key Laboratory for Metal Matrix Composite Materials, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Xue-Song Jiang
- School of Chemistry and Chemical Engineering, State Key Laboratory for Metal Matrix Composite Materials, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Guang Meng
- State Key Laboratory of Mechanical System and Vibration, School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Wen-Ming Zhang
- State Key Laboratory of Mechanical System and Vibration, School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China
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10
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Jin Z, Ren Q, Chen T, Dai Z, Shu F, Fang B, Hong Z, Shen C, Mei S. Vision transformer empowered physics-driven deep learning for omnidirectional three-dimensional holography. OPTICS EXPRESS 2024; 32:14394-14404. [PMID: 38859385 DOI: 10.1364/oe.519400] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2024] [Accepted: 03/22/2024] [Indexed: 06/12/2024]
Abstract
The inter-plane crosstalk and limited axial resolution are two key points that hinder the performance of three-dimensional (3D) holograms. The state-of-the-art methods rely on increasing the orthogonality of the cross-sections of a 3D object at different depths to lower the impact of inter-plane crosstalk. Such strategy either produces unidirectional 3D hologram or induces speckle noise. Recently, learning-based methods provide a new way to solve this problem. However, most related works rely on convolution neural networks and the reconstructed 3D holograms have limited axial resolution and display quality. In this work, we propose a vision transformer (ViT) empowered physics-driven deep neural network which can realize the generation of omnidirectional 3D holograms. Owing to the global attention mechanism of ViT, our 3D CGH has small inter-plane crosstalk and high axial resolution. We believe our work not only promotes high-quality 3D holographic display, but also opens a new avenue for complex inverse design in photonics.
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11
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Zheng H, Liu Q, Kravchenko II, Zhang X, Huo Y, Valentine JG. Multichannel meta-imagers for accelerating machine vision. NATURE NANOTECHNOLOGY 2024; 19:471-478. [PMID: 38177276 PMCID: PMC11031328 DOI: 10.1038/s41565-023-01557-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/12/2023] [Accepted: 10/27/2023] [Indexed: 01/06/2024]
Abstract
Rapid developments in machine vision technology have impacted a variety of applications, such as medical devices and autonomous driving systems. These achievements, however, typically necessitate digital neural networks with the downside of heavy computational requirements and consequent high energy consumption. As a result, real-time decision-making is hindered when computational resources are not readily accessible. Here we report a meta-imager designed to work together with a digital back end to offload computationally expensive convolution operations into high-speed, low-power optics. In this architecture, metasurfaces enable both angle and polarization multiplexing to create multiple information channels that perform positively and negatively valued convolution operations in a single shot. We use our meta-imager for object classification, achieving 98.6% accuracy in handwritten digits and 88.8% accuracy in fashion images. Owing to its compactness, high speed and low power consumption, our approach could find a wide range of applications in artificial intelligence and machine vision applications.
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Affiliation(s)
- Hanyu Zheng
- Department of Electrical and Computer Engineering, Vanderbilt University, Nashville, TN, USA
| | - Quan Liu
- Department of Computer Science, Vanderbilt University, Nashville, TN, USA
| | - Ivan I Kravchenko
- Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, TN, USA
| | - Xiaomeng Zhang
- Department of Mechanical Engineering, Vanderbilt University, Nashville, TN, USA
| | - Yuankai Huo
- Department of Computer Science, Vanderbilt University, Nashville, TN, USA
| | - Jason G Valentine
- Department of Mechanical Engineering, Vanderbilt University, Nashville, TN, USA.
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12
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Chen Q, Qu G, Yin J, Wang Y, Ji Z, Yang W, Wang Y, Yin Z, Song Q, Kivshar Y, Xiao S. Highly efficient vortex generation at the nanoscale. NATURE NANOTECHNOLOGY 2024:10.1038/s41565-024-01636-y. [PMID: 38561429 DOI: 10.1038/s41565-024-01636-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/13/2023] [Accepted: 02/16/2024] [Indexed: 04/04/2024]
Abstract
Control of the angular momentum of light at the nanoscale is critical for many applications of subwavelength photonics, such as high-capacity optical communications devices, super-resolution imaging and optical trapping. However, conventional approaches to generate optical vortices suffer from either low efficiency or relatively large device footprints. Here we show a new strategy for vortex generation at the nanoscale that surpasses single-pixel phase control. We reveal that interaction between neighbouring nanopillars of a meta-quadrumer can tailor both the intensity and phase of the transmitted light. Consequently, a subwavelength nanopillar quadrumer is sufficient to cover a 2lπ phase change, thus efficiently converting incident light into high-purity optical vortices with different topological charges l. Benefiting from the nanoscale footprint of the meta-quadrumers, we demonstrate high-density vortex beam arrays and high-dimensional information encryption, bringing a new degree of freedom to many designs of meta-devices.
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Affiliation(s)
- Qinmiao Chen
- Ministry of Industry and Information Technology Key Lab of Micro-Nano Optoelectronic Information System, Guangdong Provincial Key Laboratory of Semiconductor Optoelectronic Materials and Intelligent Photonic Systems, Harbin Institute of Technology, Shenzhen, P. R. China
| | - Geyang Qu
- Pengcheng Laboratory, Shenzhen, P. R. China
| | - Jun Yin
- Ministry of Industry and Information Technology Key Lab of Micro-Nano Optoelectronic Information System, Guangdong Provincial Key Laboratory of Semiconductor Optoelectronic Materials and Intelligent Photonic Systems, Harbin Institute of Technology, Shenzhen, P. R. China
| | - Yuhan Wang
- Ministry of Industry and Information Technology Key Lab of Micro-Nano Optoelectronic Information System, Guangdong Provincial Key Laboratory of Semiconductor Optoelectronic Materials and Intelligent Photonic Systems, Harbin Institute of Technology, Shenzhen, P. R. China
| | - Ziheng Ji
- Ministry of Industry and Information Technology Key Lab of Micro-Nano Optoelectronic Information System, Guangdong Provincial Key Laboratory of Semiconductor Optoelectronic Materials and Intelligent Photonic Systems, Harbin Institute of Technology, Shenzhen, P. R. China
| | - Wenhong Yang
- Ministry of Industry and Information Technology Key Lab of Micro-Nano Optoelectronic Information System, Guangdong Provincial Key Laboratory of Semiconductor Optoelectronic Materials and Intelligent Photonic Systems, Harbin Institute of Technology, Shenzhen, P. R. China
| | - Yujie Wang
- Ministry of Industry and Information Technology Key Lab of Micro-Nano Optoelectronic Information System, Guangdong Provincial Key Laboratory of Semiconductor Optoelectronic Materials and Intelligent Photonic Systems, Harbin Institute of Technology, Shenzhen, P. R. China
| | - Zhen Yin
- Ministry of Industry and Information Technology Key Lab of Micro-Nano Optoelectronic Information System, Guangdong Provincial Key Laboratory of Semiconductor Optoelectronic Materials and Intelligent Photonic Systems, Harbin Institute of Technology, Shenzhen, P. R. China
| | - Qinghai Song
- Ministry of Industry and Information Technology Key Lab of Micro-Nano Optoelectronic Information System, Guangdong Provincial Key Laboratory of Semiconductor Optoelectronic Materials and Intelligent Photonic Systems, Harbin Institute of Technology, Shenzhen, P. R. China.
- Pengcheng Laboratory, Shenzhen, P. R. China.
| | - Yuri Kivshar
- Nonlinear Physics Center, Research School of Physics, Australian National University, Canberra, Australian Capital Territory, Australia.
- Qingdao Innovation and Development Center, Harbin Engineering University, Qingdao, P. R. China.
| | - Shumin Xiao
- Ministry of Industry and Information Technology Key Lab of Micro-Nano Optoelectronic Information System, Guangdong Provincial Key Laboratory of Semiconductor Optoelectronic Materials and Intelligent Photonic Systems, Harbin Institute of Technology, Shenzhen, P. R. China.
- Pengcheng Laboratory, Shenzhen, P. R. China.
- Quantum Science Center of Guangdong-Hong Kong-Macan Greater Bay Area, Shenzhen, P. R. China.
- Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan, P. R. China.
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13
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Chu H, Xiong X, Fang NX, Wu F, Jia R, Peng R, Wang M, Lai Y. Matte surfaces with broadband transparency enabled by highly asymmetric diffusion of white light. SCIENCE ADVANCES 2024; 10:eadm8061. [PMID: 38489370 PMCID: PMC10942103 DOI: 10.1126/sciadv.adm8061] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/08/2023] [Accepted: 02/12/2024] [Indexed: 03/17/2024]
Abstract
The long-standing paradox between matte appearance and transparency has deprived traditional matte materials of optical transparency. Here, we present a solution to this centuries-old optical conundrum by harnessing the potential of disordered optical metasurfaces. Through the construction of a random array of meta-atoms tailored in asymmetric backgrounds, we have created transparent matte surfaces that maintain clear transparency regardless of the strength of disordered light scattering or their matte appearances. This remarkable property originates in the achievement of highly asymmetric light diffusion, exhibiting substantial diffusion in reflection and negligible diffusion in transmission across the entire visible spectrum. By fabricating macroscopic samples of such metasurfaces through industrial lithography, we have experimentally demonstrated transparent windows camouflaged as traditional matte materials, as well as transparent displays with high clarity, full color, and one-way visibility. Our work introduces an unprecedented frontier of transparent matte materials in optics, offering unprecedented opportunities and applications.
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Affiliation(s)
- Hongchen Chu
- National Laboratory of Solid State Microstructures, School of Physics, and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China
- School of Physics and Technology, Nanjing Normal University, Nanjing 210023, China
| | - Xiang Xiong
- National Laboratory of Solid State Microstructures, School of Physics, and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China
| | - Nicholas X. Fang
- Department of Mechanical Engineering, University of Hong Kong, Pokfulam Road, Hong Kong
| | - Feng Wu
- National Laboratory of Solid State Microstructures, School of Physics, and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China
| | - Runqi Jia
- National Laboratory of Solid State Microstructures, School of Physics, and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China
| | - Ruwen Peng
- National Laboratory of Solid State Microstructures, School of Physics, and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China
| | - Mu Wang
- National Laboratory of Solid State Microstructures, School of Physics, and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China
- American Physical Society, 100 Motor Pkwy, Hauppauge, NY 11788, USA
| | - Yun Lai
- National Laboratory of Solid State Microstructures, School of Physics, and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China
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14
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Tang W, Yuan H, Zhong Z, Zhang B. Multiplicative-noise-multiplexing holography with ultrahigh capacity and low cross talk. OPTICS LETTERS 2024; 49:1389-1392. [PMID: 38489407 DOI: 10.1364/ol.514569] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/29/2023] [Accepted: 02/14/2024] [Indexed: 03/17/2024]
Abstract
Optical multiplexing technologies, by utilizing various dimensions of light, can effectively expand the information capacity and density for holography but may also lead to multiplexing cross talk. Here, we propose and demonstrate a novel, to our knowledge, multiplicative-noise-multiplexing holography by utilizing the orthogonality between multiplicative noises as a multiplexing dimension. The results prove that this holography can provide a new multiplexing dimension, significantly enhancing information capacity and effectively lowering cross talk. This promising scheme for ultrahigh-capacity holography has the potential to address the limitations of traditional holographic multiplexing technologies.
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15
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Palmieri A, Dorrah AH, Yang J, Oh J, Dainese P, Capasso F. Do dielectric bilayer metasurfaces behave as a stack of decoupled single-layer metasurfaces? OPTICS EXPRESS 2024; 32:8146-8159. [PMID: 38439479 DOI: 10.1364/oe.505401] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/12/2023] [Accepted: 12/11/2023] [Indexed: 03/06/2024]
Abstract
Flat optics or metasurfaces have opened new frontiers in wavefront shaping and its applications. Polarization optics is one prominent area which has greatly benefited from the shape-birefringence of metasurfaces. However, flat optics comprising a single layer of meta-atoms can only perform a subset of polarization transformations, constrained by a symmetric Jones matrix. This limitation can be tackled using metasurfaces composed of bilayer meta-atoms but exhausting all possible combinations of geometries to build a bilayer metasurface library is a very daunting task. Consequently, bilayer metasurfaces have been widely treated as a cascade (product) of two decoupled single-layer metasurfaces. Here, we test the validity of this assumption for dielectric metasurfaces by considering a metasurface made of titanium dioxide on fused silica substrate at a design wavelength of 532 nm. We explore regions in the design space where the coupling between the top and bottom layers can be neglected, i.e., producing a far-field response which approximates that of two decoupled single-layer metasurfaces. We complement this picture with the near-field analysis to explore the underlying physics in regions where both layers are strongly coupled. We also show the generality of our analysis by applying it to silicon metasurfaces at telecom wavelengths. Our unified approach allows the designer to efficiently build a multi-layer dielectric metasurface, either in transmission or reflection, by only running one full-wave simulation for a single-layer metasurface.
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16
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Peng C, Huang T, Chen C, Liu H, Liang X, Li Z, Yu S, Zheng G. Switchable Two-Dimensional AND and Exclusive OR Operation Based on Dual-Wavelength Metasurfaces. ACS NANO 2024; 18:4424-4431. [PMID: 38276787 DOI: 10.1021/acsnano.3c10723] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/27/2024]
Abstract
Logic operation serves as the foundation and core element of computing networks; it will bring huge vitality to advanced information processing with its adaptation in the optical domain. As fundamental logic operations, AND and exclusive OR (XOR) operations serve a multitude of purposes, such as their ability to cooperate in enabling image processing and interpretation. Here, we propose and experimentally demonstrate a wavelength multiplexed AND and XOR function based on metasurfaces. By combining two cosine gratings with distinct frequencies and an initial phase difference of π/2, we extract the similarities and differences between two input images simultaneously by illuminating them with 445 and 633 nm wavelengths. Additionally, we explore its potential in information encryption, where overall security is enhanced by distributing distinct parts of initial information and encoded keys to different receivers. This design possesses the benefits of convenient mode switching and high-quality imaging, facilitating advanced applications in pattern recognition, machine vision, medical diagnosis, etc.
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Affiliation(s)
- Chang Peng
- Electronic Information School, and School of Microelectronics, Wuhan University, Wuhan, 430072, China
| | - Tian Huang
- Electronic Information School, and School of Microelectronics, Wuhan University, Wuhan, 430072, China
- Peng Cheng Laboratory, Shenzhen, 518055, China
- Wuhan Institute of Quantum Technology, Wuhan, 430206, China
| | - Chen Chen
- Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou, 215123, China
| | - Hongchao Liu
- Institute of Applied Physics and Materials Engineering, University of Macau, Avenida da Universidade, Taipa, Macao SAR, Macau, 999078, China
| | - Xiao Liang
- Electronic Information School, and School of Microelectronics, Wuhan University, Wuhan, 430072, China
| | - Zile Li
- Electronic Information School, and School of Microelectronics, Wuhan University, Wuhan, 430072, China
- Peng Cheng Laboratory, Shenzhen, 518055, China
| | - Shaohua Yu
- Peng Cheng Laboratory, Shenzhen, 518055, China
| | - Guoxing Zheng
- Electronic Information School, and School of Microelectronics, Wuhan University, Wuhan, 430072, China
- Peng Cheng Laboratory, Shenzhen, 518055, China
- Wuhan Institute of Quantum Technology, Wuhan, 430206, China
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17
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Liu J, Yang Q, Shou Y, Chen S, Shu W, Chen G, Wen S, Luo H. Metasurface-Assisted Quantum Nonlocal Weak-Measurement Microscopy. PHYSICAL REVIEW LETTERS 2024; 132:043601. [PMID: 38335360 DOI: 10.1103/physrevlett.132.043601] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/07/2023] [Accepted: 01/02/2024] [Indexed: 02/12/2024]
Abstract
In standard quantum weak measurements, preselection and postselection of quantum states are implemented in the same photon. Here we go beyond this restrictive setting and demonstrate that the preselection and postselection can be performed in two different photons, if the two photons are polarization entangled. The Pancharatnam-Berry phase metasurface is incorporated in the weak measurement system to perform weak coupling between probe wave function and spin observable. By introducing nonlocal weak measurement into the microscopy imaging system, it allows us to remotely switch different microscopy imaging modes of pure-phase objects, including bright-field, differential, and phase reconstruction. Furthermore, we demonstrate that the nonlocal weak-measurement scheme can prevent almost all environmental noise photons from detection and thus achieves a higher image contrast than the standard scheme at a low photon level. Our results provide the possibility to develop a quantum nonlocal weak-measurement microscope for label-free imaging of transparent biological samples.
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Affiliation(s)
- Jiawei Liu
- Laboratory for Spin Photonics, School of Physics and Electronics, Hunan University, Changsha 410082, China
| | - Qiang Yang
- Laboratory for Spin Photonics, School of Physics and Electronics, Hunan University, Changsha 410082, China
| | - Yichang Shou
- Laboratory for Spin Photonics, School of Physics and Electronics, Hunan University, Changsha 410082, China
| | - Shizhen Chen
- Laboratory for Spin Photonics, School of Physics and Electronics, Hunan University, Changsha 410082, China
| | - Weixing Shu
- Laboratory for Spin Photonics, School of Physics and Electronics, Hunan University, Changsha 410082, China
| | - Geng Chen
- CAS Key Laboratory of Quantum Information, University of Science and Technology of China, Hefei 230026, China
| | - Shuangchun Wen
- Laboratory for Spin Photonics, School of Physics and Electronics, Hunan University, Changsha 410082, China
| | - Hailu Luo
- Laboratory for Spin Photonics, School of Physics and Electronics, Hunan University, Changsha 410082, China
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18
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Zang H, Zhang Z, Huang Z, Lu Y, Wang P. High-precision two-dimensional displacement metrology based on matrix metasurface. SCIENCE ADVANCES 2024; 10:eadk2265. [PMID: 38198541 PMCID: PMC10780938 DOI: 10.1126/sciadv.adk2265] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/09/2023] [Accepted: 12/05/2023] [Indexed: 01/12/2024]
Abstract
A long-range, high-precision, and compact transverse displacement metrology is of crucial importance in both industries and scientific researches. However, it is a great challenge to measure arbitrary two-dimensional (2D) displacement with angstrom-level precision and hundred-micrometer range. Here, we demonstrated a prototype of high-precision 2D-displacement metrology with matrix metasurface. Light passing through the metasurface is diffracted into three beams in horizontal (H), vertical (V), and diagonal (D) linear polarization. 2D transverse displacement of the metasurface relative to the incident light beam is retrieved from the interferential optical powers arisen from coherent superposition between H-polarized and D-polarized beams or V-polarized and D-polarized beams. We experimentally demonstrate that arbitrary displacement in 2D plane can be determined with high precision down to 0.3 nm in a large range of 200 micrometers. Our work broadens the application scope of metasurface and paves the way for development of ultrasensitive optical 2D displacement metrology.
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Affiliation(s)
- Haofeng Zang
- Department of Optics and Optical Engineering, University of Science and Technology of China, Hefei 230026, China
| | - Zhiyu Zhang
- Department of Optics and Optical Engineering, University of Science and Technology of China, Hefei 230026, China
| | - Zuotang Huang
- Department of Optics and Optical Engineering, University of Science and Technology of China, Hefei 230026, China
| | - Yonghua Lu
- Department of Optics and Optical Engineering, University of Science and Technology of China, Hefei 230026, China
- Advanced Laser Technology Laboratory of Anhui Province, Hefei, Anhui 230026, China
| | - Pei Wang
- Department of Optics and Optical Engineering, University of Science and Technology of China, Hefei 230026, China
- Advanced Laser Technology Laboratory of Anhui Province, Hefei, Anhui 230026, China
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19
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Zhang B, Wang Y, Huang Z, Li H, Xu J, Ding J. Breaking symmetry restriction of chirality through spin-decoupled phase modulation utilizing non-mirror-symmetric meta-atoms. OPTICS EXPRESS 2023; 31:44076-44087. [PMID: 38178487 DOI: 10.1364/oe.507388] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/09/2023] [Accepted: 11/27/2023] [Indexed: 01/06/2024]
Abstract
The geometric phase in metasurfaces follows a symmetry restriction of chirality, which dictates that the phases of two orthogonal circularly polarized waves are identical but have opposite signs. In this study, we propose a general mechanism to disrupt this symmetric restriction on the chirality of orthogonal circular polarizations by introducing mirror-symmetry-breaking meta-atoms. This mechanism introduces a new degree of freedom in spin-decoupled phase modulation without necessitating the rotation of the meta-atom. To demonstrate the feasibility of this concept, we design what we believe is a novel meta-atom with a QR-code structure and successfully showcase circular-polarization multiplexing metasurface holography. Our investigation offers what we believe to be a novel understanding of the chirality in geometric phase within the realm of nanophotonics. Moreover, it paves the way for the development of what we believe will be novel design methodologies for electromagnetic structures, enabling applications in arbitrary wavefront engineering.
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20
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Chen C, Xiao X, Ye X, Sun J, Ji J, Yu R, Song W, Zhu S, Li T. Neural network assisted high-spatial-resolution polarimetry with non-interleaved chiral metasurfaces. LIGHT, SCIENCE & APPLICATIONS 2023; 12:288. [PMID: 38044390 PMCID: PMC10694149 DOI: 10.1038/s41377-023-01337-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/06/2023] [Revised: 10/31/2023] [Accepted: 11/12/2023] [Indexed: 12/05/2023]
Abstract
Polarimetry plays an indispensable role in modern optics. Nevertheless, the current strategies generally suffer from bulky system volume or spatial multiplexing scheme, resulting in limited performances when dealing with inhomogeneous polarizations. Here, we propose a non-interleaved, interferometric method to analyze the polarizations based on a tri-channel chiral metasurface. A deep convolutional neural network is also incorporated to enable fast, robust and accurate polarimetry. Spatially uniform and nonuniform polarizations are both measured through the metasurface experimentally. Distinction between two semblable glasses is also demonstrated. Our strategy features the merits of compactness and high spatial resolution, and would inspire more intriguing design for detecting and sensing.
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Affiliation(s)
- Chen Chen
- Nanjing University, National Laboratory of Solid State Microstructures, Key Laboratory of Intelligent Optical Sensing and Manipulations, Jiangsu Key Laboratory of Artificial Functional Materials, College of Engineering and Applied Sciences, 210093, Nanjing, China
| | - Xingjian Xiao
- Nanjing University, National Laboratory of Solid State Microstructures, Key Laboratory of Intelligent Optical Sensing and Manipulations, Jiangsu Key Laboratory of Artificial Functional Materials, College of Engineering and Applied Sciences, 210093, Nanjing, China
| | - Xin Ye
- Nanjing University, National Laboratory of Solid State Microstructures, Key Laboratory of Intelligent Optical Sensing and Manipulations, Jiangsu Key Laboratory of Artificial Functional Materials, College of Engineering and Applied Sciences, 210093, Nanjing, China
| | - Jiacheng Sun
- Nanjing University, National Laboratory of Solid State Microstructures, Key Laboratory of Intelligent Optical Sensing and Manipulations, Jiangsu Key Laboratory of Artificial Functional Materials, College of Engineering and Applied Sciences, 210093, Nanjing, China
| | - Jitao Ji
- Nanjing University, National Laboratory of Solid State Microstructures, Key Laboratory of Intelligent Optical Sensing and Manipulations, Jiangsu Key Laboratory of Artificial Functional Materials, College of Engineering and Applied Sciences, 210093, Nanjing, China
| | - Rongtao Yu
- Nanjing University, National Laboratory of Solid State Microstructures, Key Laboratory of Intelligent Optical Sensing and Manipulations, Jiangsu Key Laboratory of Artificial Functional Materials, College of Engineering and Applied Sciences, 210093, Nanjing, China
| | - Wange Song
- Nanjing University, National Laboratory of Solid State Microstructures, Key Laboratory of Intelligent Optical Sensing and Manipulations, Jiangsu Key Laboratory of Artificial Functional Materials, College of Engineering and Applied Sciences, 210093, Nanjing, China
| | - Shining Zhu
- Nanjing University, National Laboratory of Solid State Microstructures, Key Laboratory of Intelligent Optical Sensing and Manipulations, Jiangsu Key Laboratory of Artificial Functional Materials, College of Engineering and Applied Sciences, 210093, Nanjing, China
| | - Tao Li
- Nanjing University, National Laboratory of Solid State Microstructures, Key Laboratory of Intelligent Optical Sensing and Manipulations, Jiangsu Key Laboratory of Artificial Functional Materials, College of Engineering and Applied Sciences, 210093, Nanjing, China.
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21
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Hou T, Li X, Luo H, Hao Y, Chu H, Lai Y. Optically-transparent meta-window for wireless communication. OPTICS EXPRESS 2023; 31:38949-38957. [PMID: 38017985 DOI: 10.1364/oe.504238] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/28/2023] [Accepted: 10/21/2023] [Indexed: 11/30/2023]
Abstract
Circumventing the attenuation of microwaves during the propagation is of prime importance to wireless communication towards higher carrier frequencies. Here, we propose a scheme of wireless communications via a functionalized meta-window constructed by an optically-transparent metasurface (OTM) consisting of indium tin oxide (ITO) patterns. When the signal is weak, the OTM can significantly strengthen the signal by focusing the incoming waves towards the windowsill, thus substantially enhancing the network speed. The intensity enhancement of microwaves at 5 GHz via an OTM is verified by both numerical simulations and experiments. Furthermore, the ability to increase the data transfer rate in a 5-GHz-WiFi environment is directly demonstrated. Our work demonstrates the feasibility of applying an optically-transparent meta-window for enhancing wireless communications.
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22
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Chen J, Wang D, Si G, Zhang R, Hwang Y, Wang X, Zheng J, Shen M, Wang Q, Lin J. From Volumetric to Planar Multiplexing: Phase-Coded Metasurfaces without the Bragg Effect. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2023; 35:e2304386. [PMID: 37462401 DOI: 10.1002/adma.202304386] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2023] [Revised: 07/05/2023] [Indexed: 09/23/2023]
Abstract
Metasurfaces consisting of planar subwavelength structures with minimal thickness are appealing to emerging technologies such as integrated optics and photonic chips for their small footprint and compatibility with sophisticated planar nanofabrication techniques. However, reduced dimensionality due to the 2D nature of a metasurface poses challenges to the adaptation of a few useful methods that have found great success with conventional optics in 3D space. For instance, Bragg diffraction is the foundation of the well-established technique of phase-coded multiplexing in volume holography. It relies on interference among the scattered waves from multiple layers across the thickness of a sample. In this work, despite losing the dimension in thickness, a metasurface is devised to experimentally demonstrate phase-coded multiplexing by replacing free-space light with a surface wave in its output. The in-plane interference along the propagation of the surface wave resembles the Bragg diffraction, thus enabling phase-coded multiplexing in the 2D design. An example of code-based all-optical routing is also achieved by using a multiplexed metasurface, which can find applications in photonic data processing and communications.
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Affiliation(s)
- Jia Chen
- School of Electronic Science and Engineering (National Model Microelectronics College), Xiamen University, Xiamen, 361005, China
- Innovation Laboratory for Sciences and Technologies of Energy Materials of Fujian Province (IKKEM), Xiamen, 361005, China
| | - Dapeng Wang
- Institute of Biointelligence Technology, BGI-Research Shenzhen, Shenzhen, 518083, China
| | - Guangyuan Si
- Melbourne Centre for Nanofabrication, Victorian Node of the Australian National Fabrication Facility, Clayton, VIC, 3168, Australia
| | - Rongxin Zhang
- Key Laboratory of Underwater Acoustic Communication and Marine Information Technology (Xiamen University), Ministry of Education, Xiamen, 361005, China
| | - Yongsop Hwang
- Laser Physics and Photonics Devices Lab, STEM, University of South Australia, Mawson Lakes, SA, 5095, Australia
| | - Xinjian Wang
- School of Electronic Science and Engineering (National Model Microelectronics College), Xiamen University, Xiamen, 361005, China
| | - Jiaxin Zheng
- School of Electronic Science and Engineering (National Model Microelectronics College), Xiamen University, Xiamen, 361005, China
| | - Mengzhe Shen
- Institute of Biointelligence Technology, BGI-Research Shenzhen, Shenzhen, 518083, China
| | - Qian Wang
- Institute of Materials Research and Engineering, Agency for Science, Technology and Research (A*STAR), 2 Fusionopolis Way, Innovis 08-03, Singapore, 138634, Singapore
| | - Jiao Lin
- School of Engineering, RMIT University, Melbourne, Victoria, 3001, Australia
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23
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Liu Y, Wang Y, Fu X, Shi L, Yang F, Luo J, Zhou QY, Fu Y, Chen Q, Dai JY, Zhang L, Cheng Q, Cui TJ. Toward Sub-Terahertz: Space-Time Coding Metasurface Transmitter for Wideband Wireless Communications. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2023; 10:e2304278. [PMID: 37552812 PMCID: PMC10582441 DOI: 10.1002/advs.202304278] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/04/2023] [Revised: 07/20/2023] [Indexed: 08/10/2023]
Abstract
A space-time coding metasurface (STCM) operating in the sub-terahertz band to construct new-architecture wireless communication systems is proposed. Specifically, a programmable STCM is designed with varactor-diode-tuned metasurface elements, enabling precise regulation of harmonic amplitudes and phases by adjusting the time delay and duty cycle of square-wave modulation signal loaded on the varactor diodes. Independent electromagnetic (EM) regulations in the space and time domains are achieved by STCM to realize flexible beam manipulations and information modulations. Based on these features, a sub-terahertz wireless communication link is constructed by employing STCM as a transmitter. Experimental results demonstrate that the STCM supports multiple modulation schemes including frequency-shift keying, phase-shift keying, and quadrature amplitude modulations in a wide frequency band. It is also shown that the STCM is capable of realizing wide-angle beam scanning in the range of ±45o , which offers an opportunity for user tracking during the communication. Thus, the STCM transmitter with high device density and low power consumption can provide low-complexity, low-cost, low-power, and low-heat solutions for building the next-generation wireless communication systems in the sub-terahertz frequency and even terahertz band.
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Affiliation(s)
- Yujie Liu
- State Key Laboratory of Millimeter WavesSoutheast UniversityNanjing210096China
| | - Yu Wang
- State Key Laboratory of Millimeter WavesSoutheast UniversityNanjing210096China
| | - Xiaojian Fu
- State Key Laboratory of Millimeter WavesSoutheast UniversityNanjing210096China
- Institute of Electromagnetic SpaceSoutheast UniversityNanjing210096China
| | - Lei Shi
- State Key Laboratory of Millimeter WavesSoutheast UniversityNanjing210096China
| | - Fei Yang
- State Key Laboratory of Millimeter WavesSoutheast UniversityNanjing210096China
| | - Jiang Luo
- School of Electronics and InformationHangzhou Dianzi UniversityHangzhou310018China
| | - Qun Yan Zhou
- State Key Laboratory of Millimeter WavesSoutheast UniversityNanjing210096China
| | - Yuan Fu
- State Key Laboratory of Millimeter WavesSoutheast UniversityNanjing210096China
| | - Qi Chen
- State Key Laboratory of Millimeter WavesSoutheast UniversityNanjing210096China
| | - Jun Yan Dai
- State Key Laboratory of Millimeter WavesSoutheast UniversityNanjing210096China
- Institute of Electromagnetic SpaceSoutheast UniversityNanjing210096China
| | - Lei Zhang
- State Key Laboratory of Millimeter WavesSoutheast UniversityNanjing210096China
- Institute of Electromagnetic SpaceSoutheast UniversityNanjing210096China
| | - Qiang Cheng
- State Key Laboratory of Millimeter WavesSoutheast UniversityNanjing210096China
- Institute of Electromagnetic SpaceSoutheast UniversityNanjing210096China
| | - Tie Jun Cui
- State Key Laboratory of Millimeter WavesSoutheast UniversityNanjing210096China
- Institute of Electromagnetic SpaceSoutheast UniversityNanjing210096China
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24
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Wang J, Yu F, Chen J, Wang J, Chen R, Zhao Z, Chen J, Chen X, Lu W, Li G. Continuous-Spectrum-Polarization Recombinant Optical Encryption with a Dielectric Metasurface. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2023; 35:e2304161. [PMID: 37408327 DOI: 10.1002/adma.202304161] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/04/2023] [Revised: 06/28/2023] [Accepted: 07/03/2023] [Indexed: 07/07/2023]
Abstract
The Jones matrix, with eight degrees of freedom (DoFs), provides a general mathematical framework for the multifunctional design of metasurfaces. Theoretically, the maximum eight DoFs can be further extended in the spectrum dimension to endow unique encryption capabilities. However, the topology and intrinsic spectral responses of meta-atoms constrains the continuous engineering of polarization evolution over wavelength dimension. In this work, a forward evolution strategy to quickly establish the mapping relationships between the solutions of the dispersion Jones matrix and the spectral responses of meta-atoms is reported. Based on the eigenvector transformation method, arbitrary conjugate polarization channels over the continuous-spectrum dimension are successfully reconstructed. As a proof-of-concept, a silicon metadevice is demonstrated for optical information encryption transmission. Remarkably, the arbitrary combination forms of polarization and wavelength dimension increase the information capacity (210 ), and the measured polarization contrasts of the conjugate polarization conversion are >94% in the entire wavelength range (3-4 µm). It is believed that the proposed approach will benefit secure optical and quantum information technologies.
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Affiliation(s)
- Jiuxu Wang
- State Key Laboratory of Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, 500 Yu Tian Road, Shanghai, 200083, China
- University of Chinese Academy of Sciences, No.19 Yuquan Road, Beijing, 100049, China
| | - Feilong Yu
- State Key Laboratory of Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, 500 Yu Tian Road, Shanghai, 200083, China
| | - Jin Chen
- State Key Laboratory of Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, 500 Yu Tian Road, Shanghai, 200083, China
| | - Jie Wang
- State Key Laboratory of Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, 500 Yu Tian Road, Shanghai, 200083, China
| | - Rongsheng Chen
- State Key Laboratory of Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, 500 Yu Tian Road, Shanghai, 200083, China
| | - Zengyue Zhao
- State Key Laboratory of Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, 500 Yu Tian Road, Shanghai, 200083, China
| | - Jian Chen
- State Key Laboratory of Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, 500 Yu Tian Road, Shanghai, 200083, China
| | - Xiaoshuang Chen
- State Key Laboratory of Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, 500 Yu Tian Road, Shanghai, 200083, China
- University of Chinese Academy of Sciences, No.19 Yuquan Road, Beijing, 100049, China
- Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, No.1 SubLane Xiangshan, Hangzhou, 310024, China
- Shanghai Research Center for Quantum Sciences, 99 Xiupu Road, Shanghai, 201315, China
| | - Wei Lu
- State Key Laboratory of Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, 500 Yu Tian Road, Shanghai, 200083, China
- University of Chinese Academy of Sciences, No.19 Yuquan Road, Beijing, 100049, China
- Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, No.1 SubLane Xiangshan, Hangzhou, 310024, China
- Shanghai Research Center for Quantum Sciences, 99 Xiupu Road, Shanghai, 201315, China
| | - Guanhai Li
- State Key Laboratory of Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, 500 Yu Tian Road, Shanghai, 200083, China
- University of Chinese Academy of Sciences, No.19 Yuquan Road, Beijing, 100049, China
- Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, No.1 SubLane Xiangshan, Hangzhou, 310024, China
- Shanghai Research Center for Quantum Sciences, 99 Xiupu Road, Shanghai, 201315, China
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25
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Guo K, Wang C, Kang Q, Guo Z. Compact all-dielectric metasurface for full polarization detection at the long-wavelength infrared region. APPLIED OPTICS 2023; 62:7522-7528. [PMID: 37855522 DOI: 10.1364/ao.501655] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/25/2023] [Accepted: 09/13/2023] [Indexed: 10/20/2023]
Abstract
Metasurfaces have been extensively demonstrated in engineering and detection of polarization of light from the visible to terahertz regions. However, most of the previous metasurfaces for polarization detection are spatially divided into different parts, and each of the parts focuses on different polarization components, resulting in large metasurface size and hindering their integration development. In this paper, a compact all-dielectric metasurface is proposed and numerically demonstrated to achieve full polarization detection at the long-wavelength infrared region (LIR). First, we design the metasurface at a wavelength of 10 µm, which can converge incident beams to specific positions corresponding to different polarization states. In this design, the metasurface is based on an oblique alternant double-phase modulation method, which arranges meta-atoms with the ability to control as many as possible different polarizations in a limited region, ensuring the high efficiency of polarization detection while giving more freedom and flexibility to the metasurface. Second, the intensity distributions of the electric field of different polarization components are simulated at wavelengths of 9.4 µm and 10.5 µm, verifying the broadband performance of the proposed metasurface. The proposed method has potential applications in integrated multifunctional devices and multispectral polarization imaging.
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26
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Chen P, Xu X, Wang T, Zhou C, Wei D, Ma J, Guo J, Cui X, Cheng X, Xie C, Zhang S, Zhu S, Xiao M, Zhang Y. Laser nanoprinting of 3D nonlinear holograms beyond 25000 pixels-per-inch for inter-wavelength-band information processing. Nat Commun 2023; 14:5523. [PMID: 37684225 PMCID: PMC10491822 DOI: 10.1038/s41467-023-41350-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2023] [Accepted: 08/31/2023] [Indexed: 09/10/2023] Open
Abstract
Nonlinear optics provides a means to bridge between different electromagnetic frequencies, enabling communication between visible, infrared, and terahertz bands through χ(2) and higher-order nonlinear optical processes. However, precisely modulating nonlinear optical waves in 3D space remains a significant challenge, severely limiting the ability to directly manipulate optical information across different wavelength bands. Here, we propose and experimentally demonstrate a three-dimensional (3D) χ(2)-super-pixel hologram with nanometer resolution in lithium niobate crystals, capable of performing advanced processing tasks. In our design, each pixel consists of properly arranged nanodomain structures capable of completely and dynamically manipulating the complex-amplitude of nonlinear waves. Fabricated by femtosecond laser writing, the nonlinear hologram features a pixel diameter of 500 nm and a pixel density of approximately 25000 pixels-per-inch (PPI), reaching far beyond the state of the art. In our experiments, we successfully demonstrate the novel functions of the hologram to process near-infrared (NIR) information at visible wavelengths, including dynamic 3D nonlinear holographic imaging and frequency-up-converted image recognition. Our scheme provides a promising nano-optic platform for high-capacity optical storage and multi-functional information processing across different wavelength ranges.
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Affiliation(s)
- Pengcheng Chen
- National Laboratory of Solid State Microstructures, College of Engineering and Applied Sciences, School of Physics, and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, 210093, China
| | - Xiaoyi Xu
- National Laboratory of Solid State Microstructures, College of Engineering and Applied Sciences, School of Physics, and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, 210093, China
| | - Tianxin Wang
- National Laboratory of Solid State Microstructures, College of Engineering and Applied Sciences, School of Physics, and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, 210093, China
| | - Chao Zhou
- National Laboratory of Solid State Microstructures, College of Engineering and Applied Sciences, School of Physics, and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, 210093, China
| | - Dunzhao Wei
- School of Physics, Sun Yat-sen University, Guangzhou, 510275, China
| | - Jianan Ma
- National Laboratory of Solid State Microstructures, College of Engineering and Applied Sciences, School of Physics, and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, 210093, China
| | - Junjie Guo
- National Laboratory of Solid State Microstructures, College of Engineering and Applied Sciences, School of Physics, and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, 210093, China
| | - Xuejing Cui
- National Laboratory of Solid State Microstructures, College of Engineering and Applied Sciences, School of Physics, and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, 210093, China
| | - Xiaoyan Cheng
- National Laboratory of Solid State Microstructures, College of Engineering and Applied Sciences, School of Physics, and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, 210093, China
| | - Chenzhu Xie
- National Laboratory of Solid State Microstructures, College of Engineering and Applied Sciences, School of Physics, and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, 210093, China
| | - Shuang Zhang
- Department of Physics, The University of Hong Kong, Hong Kong, China
- Department of Electrical and Electronic Engineering, University of Hong Kong, Hong Kong, China
| | - Shining Zhu
- National Laboratory of Solid State Microstructures, College of Engineering and Applied Sciences, School of Physics, and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, 210093, China
| | - Min Xiao
- National Laboratory of Solid State Microstructures, College of Engineering and Applied Sciences, School of Physics, and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, 210093, China
- Department of Physics, University of Arkansas, Fayetteville, AR, 72701, USA
| | - Yong Zhang
- National Laboratory of Solid State Microstructures, College of Engineering and Applied Sciences, School of Physics, and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, 210093, China.
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27
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Liu SJ, Zhu L, Zhang YH, Chen W, Zhu D, Chen P, Lu YQ. Bi-Chiral Nanostructures Featuring Dynamic Optical Rotatory Dispersion for Polychromatic Light Multiplexing. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2023; 35:e2301714. [PMID: 37158735 DOI: 10.1002/adma.202301714] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/22/2023] [Revised: 04/14/2023] [Indexed: 05/10/2023]
Abstract
Chiral nanostructures featuring the unique optical activity have attracted broad interests from scientists. The typical polarization rotation of transmitted light is usually wavelength dependent, namely the optical rotatory dispersion. However, its dynamic tunability and intriguing collaboration with other optical degrees of freedom, especially the highly desired spatial phase, remain elusive. Herein, a bi-chiral liquid crystalline nanostructure is proposed to induce an effect called reflective optical rotatory dispersion. Thanks to the independent manipulation of opposite-handed self-assembled helices, spin-decoupled geometric phases are induced simultaneously. These naturally unite multi-dimensions of light and versatile stimuli-responsiveness of soft matter. Dynamic holography driven by heat and electric field is demonstrated with a fast response. For polychromatic light, the hybrid multiplexed holographic painting is exhibited with fruitful tunable colors. This study extends the ingenious construction of soft chiral superstructures, presents an open-ended strategy for on-demand light control, and enlightens advanced applications of display, optical computing, and communication.
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Affiliation(s)
- Si-Jia Liu
- National Laboratory of Solid State Microstructures, Key Laboratory of Intelligent Optical Sensing and Manipulation, College of Engineering and Applied Sciences, and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, 210093, China
| | - Lin Zhu
- National Laboratory of Solid State Microstructures, Key Laboratory of Intelligent Optical Sensing and Manipulation, College of Engineering and Applied Sciences, and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, 210093, China
| | - Yi-Heng Zhang
- National Laboratory of Solid State Microstructures, Key Laboratory of Intelligent Optical Sensing and Manipulation, College of Engineering and Applied Sciences, and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, 210093, China
| | - Wen Chen
- National Laboratory of Solid State Microstructures, Key Laboratory of Intelligent Optical Sensing and Manipulation, College of Engineering and Applied Sciences, and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, 210093, China
| | - Dong Zhu
- National Laboratory of Solid State Microstructures, Key Laboratory of Intelligent Optical Sensing and Manipulation, College of Engineering and Applied Sciences, and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, 210093, China
| | - Peng Chen
- National Laboratory of Solid State Microstructures, Key Laboratory of Intelligent Optical Sensing and Manipulation, College of Engineering and Applied Sciences, and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, 210093, China
| | - Yan-Qing Lu
- National Laboratory of Solid State Microstructures, Key Laboratory of Intelligent Optical Sensing and Manipulation, College of Engineering and Applied Sciences, and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, 210093, China
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28
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Sheng Y, Zhang Y, Xing F, Liu C, Di Y, Yang X, Wei S, Zhang X, Liu Y, Gan Z. Co-multiplexing spectral and temporal dimensions based on luminescent materials. OPTICS EXPRESS 2023; 31:24667-24677. [PMID: 37475287 DOI: 10.1364/oe.495972] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/18/2023] [Accepted: 06/30/2023] [Indexed: 07/22/2023]
Abstract
Optical multiplexing is a pivotal technique for augmenting the capacity of optical data storage (ODS) and increasing the security of anti-counterfeiting. However, due to the dearth of appropriate storage media, optical multiplexing is generally restricted to a single dimension, thus curtailing the encoding capacity. Herein, the co-multiplexing spectral and temporal dimensions are proposed for optical encoding based on photoluminescence (PL) and persistent-luminescence (PersL) at four different wavelengths. Each emission color comprises four luminescence modes. The further multiplexing of four wavelengths leads to the maximum encoding capacity of 8 bits at each pixel. The wavelength difference between adjacent peaks is larger than 50 nm. The well-separated emission wavelengths significantly lower the requirements for high-resolution spectrometers. Moreover, the information is unable to be decoded until both PL and PersL spectra are collected, suggesting a substantial improvement in information security and the security level of anti-counterfeiting.
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29
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Chen C, Xue M, Liu Y, Zhao L, Yang Y, Hu X, Fu Y. Switchable supermode emission in a doubly-coupled-ring system for multifunctional integrated photonic devices. OPTICS LETTERS 2023; 48:3705-3708. [PMID: 37450730 DOI: 10.1364/ol.497294] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/05/2023] [Accepted: 06/18/2023] [Indexed: 07/18/2023]
Abstract
Effective integration of optical modes within chip-scale devices is critical to realize functional light emission, as it offers abundant physics and a versatile ability to control the mode evolution. Here, we present an efficient approach to achieve switchable emission by flexibly controlling supermode states in a doubly-coupled-ring system with four guided modes. The lasing conditions, which rely on the system's Hamiltonian, are revealed to yield multiple supermode states, including an exceptional-point state, a (quasi-)dark state, and a bright state. By freely engineering the coupling rate via phase-change material, the proposed system allows the generation of any desired states, enabling switchable and multifunctional emissions in fixed on-chip structures. Beyond the manipulation of various supermode emission states, our work presents a promising path toward the development of multifunctional integrated photonic devices, which may have applications in light storage, optical isolation, sensing, and so on.
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30
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Li B, Su H, Meng W, Cheng K, Luan H, Gu M, Fang X. Orbital angular momentum holographic multicasting for switchable and secure wireless optical communication links. OPTICS EXPRESS 2023; 31:23106-23114. [PMID: 37475403 DOI: 10.1364/oe.494844] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/08/2023] [Accepted: 06/16/2023] [Indexed: 07/22/2023]
Abstract
The physical dimension of orbital angular momentum (OAM) states of light has been successfully implemented as information carrier in wireless optical communication (WOC) links. However, the current OAM data coding strategies in WOC are mainly limited to the temporal domain, rarely involving the degree of freedom of spatial domain to transmit an image directly. Here, we apply OAM holographic multiplexing technology for spatial information encoding in WOC links. Further, we demonstrate the new concept of OAM holographic multicasting, wherein a beam-steering grating has been utilized for information decoding. To distribute the OAM multiplexing information appropriately in the receiving terminal, the beam-steering grating with controllable topological charges and amplitude weighting coefficients of each diffraction order in the spatial frequency domain has been designed. An iterative algorithm has been introduced to obtain the intensity uniformity >98% at target diffraction orders. As such, this scheme experimentally allows four separate users to receive independent images, which can be switched by modulating the topological charges of the beam-steering gratings at each diffraction order. In addition, this leads to a beam-steering grating-encrypted WOC links, wherein the information can only be decoded by the grating phase with 7 pre-set spatial frequency components. Our results mark a new parallel decoding paradigm of OAM multiplexing holography, which opens up the door for future high-capacity and high-security all-optical holographic communications.
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31
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Li Z, Li C, Xiong Z, Xu G, Wang YR, Tian X, Yang X, Liu Z, Zeng Q, Lin R, Li Y, Lee JKW, Ho JS, Qiu CW. Stochastic Exceptional Points for Noise-Assisted Sensing. PHYSICAL REVIEW LETTERS 2023; 130:227201. [PMID: 37327430 DOI: 10.1103/physrevlett.130.227201] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/12/2022] [Accepted: 04/07/2023] [Indexed: 06/18/2023]
Abstract
Noise is a fundamental challenge for sensors deployed in daily environments for ambient sensing, health monitoring, and wireless networking. Current strategies for noise mitigation rely primarily on reducing or removing noise. Here, we introduce stochastic exceptional points and show the utility to reverse the detrimental effect of noise. The stochastic process theory illustrates that the stochastic exceptional points manifest as fluctuating sensory thresholds that give rise to stochastic resonance, a counterintuitive phenomenon in which the added noise increases the system's ability to detect weak signals. Demonstrations using a wearable wireless sensor show that the stochastic exceptional points lead to more accurate tracking of a person's vital signs during exercise. Our results may lead to a distinct class of sensors that overcome and are enhanced by ambient noise for applications ranging from healthcare to the internet of things.
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Affiliation(s)
- Zhipeng Li
- Department of Electrical and Computer Engineering, National University of Singapore, Singapore 117583, Singapore
| | - Chenhui Li
- Department of Electrical and Computer Engineering, National University of Singapore, Singapore 117583, Singapore
| | - Ze Xiong
- Wireless and Smart Bioelectronics Lab, School of Biomedical Engineering, ShanghaiTech University, Shanghai 201210, China
| | - Guoqiang Xu
- Department of Electrical and Computer Engineering, National University of Singapore, Singapore 117583, Singapore
| | - Yongtai Raymond Wang
- Department of Physiology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117593, Singapore
| | - Xi Tian
- Department of Electrical and Computer Engineering, National University of Singapore, Singapore 117583, Singapore
| | - Xin Yang
- Department of Electrical and Computer Engineering, National University of Singapore, Singapore 117583, Singapore
| | - Zhu Liu
- School of Physics and Electronics, Hunan Normal University, Changsha, Hunan 410081, China
| | - Qihang Zeng
- Department of Electrical and Computer Engineering, National University of Singapore, Singapore 117583, Singapore
| | - Rongzhou Lin
- Department of Electrical and Computer Engineering, National University of Singapore, Singapore 117583, Singapore
| | - Ying Li
- Interdisciplinary Center for Quantum Information, State Key Laboratory of Modern Optical Instrumentation, ZJU-Hangzhou Global Scientific and Technological Innovation Center, Zhejiang University, Hangzhou 310027, China
- International Joint Innovation Center, Key Lab of Advanced Micro/Nano Electronic Devices and Smart Systems of Zhejiang, The Electromagnetics Academy of Zhejiang University, Zhejiang University, Haining 314400, China
| | - Jason Kai Wei Lee
- Department of Physiology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117593, Singapore
- Heat Resilience and Performance Centre, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 119228, Singapore
- Human Potential Translational Research Programme, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 119228, Singapore
| | - John S Ho
- Department of Electrical and Computer Engineering, National University of Singapore, Singapore 117583, Singapore
| | - Cheng-Wei Qiu
- Department of Electrical and Computer Engineering, National University of Singapore, Singapore 117583, Singapore
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32
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Lin S, Luo H, He H, Chu H, Lai Y. Broadband binary-reflection-phase metasurfaces with undistorted transmission wavefront via mirror symmetry. OPTICS EXPRESS 2023; 31:17746-17758. [PMID: 37381500 DOI: 10.1364/oe.489993] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/20/2023] [Accepted: 04/25/2023] [Indexed: 06/30/2023]
Abstract
In this work, we report the realization of broadband binary-reflection-phase metasurfaces that simultaneously exhibit undistorted transmission wavefront. Such a unique functionality is bestowed by leveraging mirror symmetry in the metasurface design. Under the normal incidence of waves polarized along the mirror surface, a broadband binary-phase pattern with π phase difference is induced in the cross-polarized reflection, while the co-polarized transmission and reflection are unaffected by the binary-phase pattern. Consequently, the cross-polarized reflection can be flexibly manipulated by designing the binary-phase pattern, without distorting the wavefront in transmission. The phenomena of reflected-beam splitting and undistorted transmission wavefront are hereby experimentally validated in a broad bandwidth from 8 GHz to 13 GHz. Our findings reveal a unique mechanism to realize independent manipulation of reflection with undistorted transmission wavefront in a broad spectrum, which has potential implications in meta-domes and reconfigurable intelligent surfaces.
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33
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Chen J, Yu F, Liu X, Bao Y, Chen R, Zhao Z, Wang J, Wang X, Liu W, Shi Y, Qiu CW, Chen X, Lu W, Li G. Polychromatic full-polarization control in mid-infrared light. LIGHT, SCIENCE & APPLICATIONS 2023; 12:105. [PMID: 37142624 PMCID: PMC10160079 DOI: 10.1038/s41377-023-01140-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/06/2023] [Revised: 03/23/2023] [Accepted: 03/29/2023] [Indexed: 05/06/2023]
Abstract
Objects with different shapes, materials and temperatures can emit distinct polarizations and spectral information in mid-infrared band, which provides a unique signature in the transparent window for object identification. However, the crosstalk among various polarization and wavelength channels prevents from accurate mid-infrared detections at high signal-to-noise ratio. Here, we report full-polarization metasurfaces to break the inherent eigen-polarization constraint over the wavelengths in mid-infrared. This recipe enables to select arbitrary orthogonal polarization basis at individual wavelength independently, therefore alleviating the crosstalk and efficiency degradation. A six-channel all-silicon metasurface is specifically presented to project focused mid-infrared light to distinct positions at three wavelengths, each with a pair of arbitrarily chosen orthogonal polarizations. An isolation ratio of 117 between neighboring polarization channels is experimentally recorded, exhibiting detection sensitivity one order of magnitude higher than existing infrared detectors. Remarkably, the high aspect ratio ~30 of our meta-structures manufactured by deep silicon etching technology at temperature -150 °C guarantees the large and precise phase dispersion control over a broadband from 3 to 4.5 μm. We believe our results would benefit the noise-immune mid-infrared detections in remote sensing and space-to-ground communications.
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Affiliation(s)
- Jin Chen
- State Key Laboratory of Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, 500 Yu Tian Road, Shanghai, 200083, China
- Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, No. 1 SubLane Xiangshan, Hangzhou, 310024, China
- Shanghai Research Center for Quantum Sciences, 99 Xiupu Road, Shanghai, 201315, China
- University of Chinese Academy of Science, No. 19 Yuquan Road, Beijing, 100049, China
| | - Feilong Yu
- State Key Laboratory of Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, 500 Yu Tian Road, Shanghai, 200083, China
- Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, No. 1 SubLane Xiangshan, Hangzhou, 310024, China
- Shanghai Research Center for Quantum Sciences, 99 Xiupu Road, Shanghai, 201315, China
- University of Chinese Academy of Science, No. 19 Yuquan Road, Beijing, 100049, China
| | - Xingsi Liu
- Department of Electrical and Computer Engineering, National University of Singapore, 4 Engineering Drive 3, Singapore, 117583, Singapore
| | - Yanjun Bao
- Institute of Nanophotonics, Jinan University, Guangzhou, 511443, China
| | - Rongsheng Chen
- State Key Laboratory of Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, 500 Yu Tian Road, Shanghai, 200083, China
- University of Chinese Academy of Science, No. 19 Yuquan Road, Beijing, 100049, China
| | - Zengyue Zhao
- State Key Laboratory of Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, 500 Yu Tian Road, Shanghai, 200083, China
- University of Chinese Academy of Science, No. 19 Yuquan Road, Beijing, 100049, China
| | - Jiuxu Wang
- State Key Laboratory of Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, 500 Yu Tian Road, Shanghai, 200083, China
- University of Chinese Academy of Science, No. 19 Yuquan Road, Beijing, 100049, China
| | - Xiuxia Wang
- Center for Micro-and Nanoscale Research and Fabrication, University of Science and Technology of China, Hefei, 230026, China
| | - Wen Liu
- Center for Micro-and Nanoscale Research and Fabrication, University of Science and Technology of China, Hefei, 230026, China
| | - Yuzhi Shi
- Institute of Precision Optical Engineering, School of Physics Science and Engineering, Tongji University, Shanghai, 200092, China
| | - Cheng-Wei Qiu
- Department of Electrical and Computer Engineering, National University of Singapore, 4 Engineering Drive 3, Singapore, 117583, Singapore.
- National University of Singapore Suzhou Research Institute, No. 377 Linquan Street, Suzhou, Jiangsu, 215123, China.
| | - Xiaoshuang Chen
- State Key Laboratory of Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, 500 Yu Tian Road, Shanghai, 200083, China
- Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, No. 1 SubLane Xiangshan, Hangzhou, 310024, China
- Shanghai Research Center for Quantum Sciences, 99 Xiupu Road, Shanghai, 201315, China
- University of Chinese Academy of Science, No. 19 Yuquan Road, Beijing, 100049, China
| | - Wei Lu
- State Key Laboratory of Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, 500 Yu Tian Road, Shanghai, 200083, China
- Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, No. 1 SubLane Xiangshan, Hangzhou, 310024, China
- Shanghai Research Center for Quantum Sciences, 99 Xiupu Road, Shanghai, 201315, China
- University of Chinese Academy of Science, No. 19 Yuquan Road, Beijing, 100049, China
| | - Guanhai Li
- State Key Laboratory of Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, 500 Yu Tian Road, Shanghai, 200083, China.
- Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, No. 1 SubLane Xiangshan, Hangzhou, 310024, China.
- Shanghai Research Center for Quantum Sciences, 99 Xiupu Road, Shanghai, 201315, China.
- University of Chinese Academy of Science, No. 19 Yuquan Road, Beijing, 100049, China.
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