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Petronijevic E, Cesca T, Scian C, Mattei G, Voti RL, Sibilia C, Belardini A. Demonstration of extrinsic chirality in self-assembled asymmetric plasmonic metasurfaces and nanohole arrays. Sci Rep 2024; 14:17210. [PMID: 39060402 PMCID: PMC11282274 DOI: 10.1038/s41598-024-68007-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2024] [Accepted: 07/17/2024] [Indexed: 07/28/2024] Open
Abstract
Chirality, the lack of mirror symmetry, can be mimicked in nanophotonics and plasmonics by breaking the symmetry in light-nanostructure interaction. Here we report on versatile use of nanosphere lithography for the fabrication of low-cost metasurfaces, which exhibit broadband handedness- and angle-dependent extinction in the near-infrared range, thus offering extrinsic chiro-optical behavior. We measure wavelength and angle dependence of the extinction for four samples. Two samples are made of polystyrene nanospheres asymmetrically covered by silver and gold in one case and silver only in the other case, with a nanohole array at the bottom. The other two samples are nanohole arrays, obtained after the nanosphere removal from the first two samples. Rich extrinsic chiral features are governed by different chiro-optical mechanisms in the three-dimensional plasmonic semi-shells and planar nanohole arrays. We also measure Stokes parameters in the same wavelength and incidence angle range and show that the transmitted fields follow the extrinsic chirality features of the extinction dissymmetry. We further study the influences of the nanostructured shapes and in-plane orientations on the intrinsic vs extrinsic chirality. The nanoholes are modelled as oval shapes in metal, showing good agreement with the experiments. We thus confirm that nanosphere lithography can provide different geometries for chiral light manipulation at the nanoscale, with the possibility to extend functionalities with optimized oval shapes and combination of constituent metals.
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Affiliation(s)
- Emilija Petronijevic
- Department SBAI, Sapienza University of Roma, Via A. Scarpa 14, 00161, Rome, Italy.
| | - T Cesca
- Physics and Astronomy Department, University of Padova, Via Marzolo 8, 35131, Padova, Italy
| | - C Scian
- Physics and Astronomy Department, University of Padova, Via Marzolo 8, 35131, Padova, Italy
| | - G Mattei
- Physics and Astronomy Department, University of Padova, Via Marzolo 8, 35131, Padova, Italy
| | - R Li Voti
- Department SBAI, Sapienza University of Roma, Via A. Scarpa 14, 00161, Rome, Italy
| | - C Sibilia
- Department SBAI, Sapienza University of Roma, Via A. Scarpa 14, 00161, Rome, Italy
| | - A Belardini
- Department SBAI, Sapienza University of Roma, Via A. Scarpa 14, 00161, Rome, Italy
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2
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Lee SJ, So JP, Kim RM, Kim KH, Rha HH, Na G, Han JH, Jeong KY, Nam KT, Park HG. Spin angular momentum-encoded single-photon emitters in a chiral nanoparticle-coupled WSe 2 monolayer. SCIENCE ADVANCES 2024; 10:eadn7210. [PMID: 38787944 PMCID: PMC11122662 DOI: 10.1126/sciadv.adn7210] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/23/2023] [Accepted: 04/23/2024] [Indexed: 05/26/2024]
Abstract
Spin angular momentum (SAM)-encoded single-photon emitters, also known as circularly polarized single photons, are basic building blocks for the advancement of chiral quantum optics and cryptography. Despite substantial efforts such as coupling quantum emitters to grating-like optical metasurfaces and applying intense magnetic fields, it remains challenging to generate circularly polarized single photons from a subwavelength-scale nanostructure in the absence of a magnetic field. Here, we demonstrate single-photon emitters encoded with SAM in a strained WSe2 monolayer coupled with chiral plasmonic gold nanoparticles. Single-photon emissions were observed at the nanoparticle position, exhibiting photon antibunching behavior with a g(2)(0) value of ~0.3 and circular polarization properties with a slight preference for left-circular polarization. Specifically, the measured Stokes parameters confirmed strong circular polarization characteristics, in contrast to emitters coupled with achiral gold nanocubes. Therefore, this work provides potential insights to make SAM-encoded single-photon emitters and understand the interaction of plasmonic dipoles and single photons, facilitating the development of chiral quantum optics.
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Affiliation(s)
- Soon-Jae Lee
- Department of Physics, Korea University, Seoul 02841, Republic of Korea
| | - Jae-Pil So
- Department of Physics and Astronomy, and Institute of Applied Physics, Seoul National University, Seoul 08826, Republic of Korea
| | - Ryeong Myeong Kim
- Department of Materials Science and Engineering, Seoul National University, Seoul 08826, Republic of Korea
| | - Kyoung-Ho Kim
- Department of Physics, Chungbuk National University, Cheongju 28644, Republic of Korea
| | - Hyun-Ho Rha
- Department of Physics and Astronomy, and Institute of Applied Physics, Seoul National University, Seoul 08826, Republic of Korea
| | - Gunwoo Na
- Department of Physics and Astronomy, and Institute of Applied Physics, Seoul National University, Seoul 08826, Republic of Korea
| | - Jeong Hyun Han
- Department of Materials Science and Engineering, Seoul National University, Seoul 08826, Republic of Korea
| | - Kwang-Yong Jeong
- Department of Physics, Chungnam National University, Daejeon 34134, Republic of Korea
| | - Ki Tae Nam
- Department of Materials Science and Engineering, Seoul National University, Seoul 08826, Republic of Korea
| | - Hong-Gyu Park
- Department of Physics and Astronomy, and Institute of Applied Physics, Seoul National University, Seoul 08826, Republic of Korea
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3
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Kilic U, Hilfiker M, Wimer S, Ruder A, Schubert E, Schubert M, Argyropoulos C. Controlling the broadband enhanced light chirality with L-shaped dielectric metamaterials. Nat Commun 2024; 15:3757. [PMID: 38704375 PMCID: PMC11069550 DOI: 10.1038/s41467-024-48051-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2023] [Accepted: 04/16/2024] [Indexed: 05/06/2024] Open
Abstract
The inherently weak chiroptical responses of natural materials limit their usage for controlling and enhancing chiral light-matter interactions. Recently, several nanostructures with subwavelength scale dimensions were demonstrated, mainly due to the advent of nanofabrication technologies, as a potential alternative to efficiently enhance chirality. However, the intrinsic lossy nature of metals and the inherent narrowband response of dielectric planar thin films or metasurface structures pose severe limitations toward the practical realization of broadband and tailorable chiral systems. Here, we tackle these problems by designing all-dielectric silicon-based L-shaped optical metamaterials based on tilted nanopillars that exhibit broadband and enhanced chiroptical response in transmission operation. We use an emerging bottom-up fabrication approach, named glancing angle deposition, to assemble these dielectric metamaterials on a wafer scale. The reported strong chirality and optical anisotropic properties are controllable in terms of both amplitude and operating frequency by simply varying the shape and dimensions of the nanopillars. The presented nanostructures can be used in a plethora of emerging nanophotonic applications, such as chiral sensors, polarization filters, and spin-locked nanowaveguides.
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Affiliation(s)
- Ufuk Kilic
- Department of Electrical and Computer Engineering, University of Nebraska-Lincoln, Lincoln, NE, 68588, USA.
| | - Matthew Hilfiker
- Department of Electrical and Computer Engineering, University of Nebraska-Lincoln, Lincoln, NE, 68588, USA
- Onto Innovation Inc., Wilmington, MA, 01887, USA
| | - Shawn Wimer
- Department of Electrical and Computer Engineering, University of Nebraska-Lincoln, Lincoln, NE, 68588, USA
| | - Alexander Ruder
- Department of Electrical and Computer Engineering, University of Nebraska-Lincoln, Lincoln, NE, 68588, USA
| | - Eva Schubert
- Department of Electrical and Computer Engineering, University of Nebraska-Lincoln, Lincoln, NE, 68588, USA
| | - Mathias Schubert
- Department of Electrical and Computer Engineering, University of Nebraska-Lincoln, Lincoln, NE, 68588, USA
- Solid State Physics and NanoLund, Lund University, P.O. Box 118, 22100, Lund, Sweden
| | - Christos Argyropoulos
- Department of Electrical Engineering, The Pennsylvania State University, University Park, PA, 16803, USA.
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4
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Kan Y, Liu X, Kumar S, Bozhevolnyi SI. Tempering Multichannel Photon Emission from Emitter-Coupled Holographic Metasurfaces. ACS PHOTONICS 2024; 11:1584-1591. [PMID: 38645997 PMCID: PMC11027142 DOI: 10.1021/acsphotonics.3c01745] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/29/2023] [Revised: 01/30/2024] [Accepted: 01/31/2024] [Indexed: 04/23/2024]
Abstract
On-chip manipulation of photon emission from quantum emitters (QEs) is crucial for quantum nanophotonics and advanced optical applications. At the same time, the general design strategy is still elusive, especially for fully exploring the degrees of freedom of multiple channels. Here, the vectorial scattering holography (VSH) approach developed recently for flexibly designing QE-coupled metasurfaces is extended to tempering the strength of QE emission into a particular channel. The VSH power is demonstrated by designing, fabricating, and optically characterizing on-chip QE sources emitted into six differently oriented propagation channels, each representing the entangled state of orthogonal circular polarizations with different topological charges and characterized with a specific relative strength. We postulate that the demonstration of tempered multichannel photon emission from QE-coupled metasurfaces significantly broadens the possibilities provided by the holographic metasurface platform, especially those relevant for high-dimensional quantum information processing.
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Affiliation(s)
- Yinhui Kan
- Center for Nano Optics, University of Southern Denmark, Odense M DK-5230, Denmark
| | - Xujing Liu
- Center for Nano Optics, University of Southern Denmark, Odense M DK-5230, Denmark
| | - Shailesh Kumar
- Center for Nano Optics, University of Southern Denmark, Odense M DK-5230, Denmark
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5
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Mishra S, Bowes EG, Majumder S, Hollingsworth JA, Htoon H, Jones AC. Inducing Circularly Polarized Single-Photon Emission via Chiral-Induced Spin Selectivity. ACS NANO 2024; 18:8663-8672. [PMID: 38484339 DOI: 10.1021/acsnano.3c08676] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/27/2024]
Abstract
One of the central aims of the field of spintronics is the control of individual electron spins to effectively manage the transmission of quantized data. One well-known mechanism for controlling electronic spin transport is the chiral-induced spin-selectivity (CISS) effect in which a helical nanostructure imparts a preferential spin orientation on the electronic transport. One potential application of the CISS effect is as a transduction pathway between electronic spin and circularly polarized light within nonreciprocal photonic devices. In this work, we identify and quantify the degree of chiral-induced spin-selective electronic transport in helical polyaniline films using magnetoconductive atomic force microscopy (mcAFM). We then induce circularly polarized quantum light emission from CdSe/CdS core/shell quantum dots placed on these films, demonstrating a degree of circular polarization of up to ∼21%. Utilizing time-resolved photoluminescence microscopy, we measure the radiative lifetime difference associated with left- and right-handed circular polarizations of single emitters. These lifetime differences, in combination with Kelvin probe mapping of the variation of surface potential with magnetization of the substrate, help establish an energy level diagram describing the spin-dependent transport pathways that enable the circularly polarized photoluminescence.
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Affiliation(s)
- Suryakant Mishra
- Center for Integrated Nanotechnologies, Materials Physics and Applications Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
| | - Eric G Bowes
- Center for Integrated Nanotechnologies, Materials Physics and Applications Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
| | - Somak Majumder
- Center for Integrated Nanotechnologies, Materials Physics and Applications Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
| | - Jennifer A Hollingsworth
- Center for Integrated Nanotechnologies, Materials Physics and Applications Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
| | - Han Htoon
- Center for Integrated Nanotechnologies, Materials Physics and Applications Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
| | - Andrew C Jones
- Center for Integrated Nanotechnologies, Materials Physics and Applications Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
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6
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Ma J, Zhang J, Horder J, Sukhorukov AA, Toth M, Neshev DN, Aharonovich I. Engineering Quantum Light Sources with Flat Optics. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024:e2313589. [PMID: 38477536 DOI: 10.1002/adma.202313589] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/13/2023] [Revised: 02/26/2024] [Indexed: 03/14/2024]
Abstract
Quantum light sources are essential building blocks for many quantum technologies, enabling secure communication, powerful computing, and precise sensing and imaging. Recent advancements have witnessed a significant shift toward the utilization of "flat" optics with thickness at subwavelength scales for the development of quantum light sources. This approach offers notable advantages over conventional bulky counterparts, including compactness, scalability, and improved efficiency, along with added functionalities. This review focuses on the recent advances in leveraging flat optics to generate quantum light sources. Specifically, the generation of entangled photon pairs through spontaneous parametric down-conversion in nonlinear metasurfaces, and single photon emission from quantum emitters including quantum dots and color centers in 3D and 2D materials are explored. The review covers theoretical principles, fabrication techniques, and properties of these sources, with particular emphasis on the enhanced generation and engineering of quantum light sources using optical resonances supported by nanostructures. The diverse application range of these sources is discussed and the current challenges and perspectives in the field are highlighted.
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Affiliation(s)
- Jinyong Ma
- ARC Centre of Excellence for Transformative Meta-Optical Systems (TMOS), Department of Electronic Materials Engineering, Research School of Physics, Australian National University, Canberra, 2600, Australia
| | - Jihua Zhang
- ARC Centre of Excellence for Transformative Meta-Optical Systems (TMOS), Department of Electronic Materials Engineering, Research School of Physics, Australian National University, Canberra, 2600, Australia
- Songshan Lake Materials Laboratory, Dongguan, Guangdong, 523808, P. R. China
| | - Jake Horder
- ARC Centre of Excellence for Transformative Meta-Optical Systems (TMOS), School of Mathematical and Physical Sciences, University of Technology Sydney, Ultimo, 2007, Australia
| | - Andrey A Sukhorukov
- ARC Centre of Excellence for Transformative Meta-Optical Systems (TMOS), Department of Electronic Materials Engineering, Research School of Physics, Australian National University, Canberra, 2600, Australia
| | - Milos Toth
- ARC Centre of Excellence for Transformative Meta-Optical Systems (TMOS), School of Mathematical and Physical Sciences, University of Technology Sydney, Ultimo, 2007, Australia
| | - Dragomir N Neshev
- ARC Centre of Excellence for Transformative Meta-Optical Systems (TMOS), Department of Electronic Materials Engineering, Research School of Physics, Australian National University, Canberra, 2600, Australia
| | - Igor Aharonovich
- ARC Centre of Excellence for Transformative Meta-Optical Systems (TMOS), School of Mathematical and Physical Sciences, University of Technology Sydney, Ultimo, 2007, Australia
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7
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Sannomiya T, Matsukata T, Yamamoto N. Controllable Chiral Light Generation and Vortex Field Investigation Using Plasmonic Holes Revealed by Cathodoluminescence. NANO LETTERS 2024; 24:929-934. [PMID: 38173237 PMCID: PMC10811657 DOI: 10.1021/acs.nanolett.3c04262] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/06/2023] [Revised: 12/19/2023] [Accepted: 12/20/2023] [Indexed: 01/05/2024]
Abstract
Control of the angular momentum of light is a key technology for next-generation nano-optical devices and optical communications, including quantum communication and encoding. We propose an approach to controllably generate circularly polarized light from a circular hole in a metal film using an electron beam by coherently exciting transition radiation and light scattering from the hole through surface plasmon polaritons. The circularly polarized light generation is confirmed by fully polarimetric four-dimensional cathodoluminescence mapping, where angle-resolved spectra are simultaneously obtained. The obtained intensity and Stokes maps show clear interference fringes as well as almost fully circularly polarized light generation with controllable parities by the electron beam position. By applying this approach to a three-hole system, a vortex field with a phase singularity is visualized in the middle of three holes.
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Affiliation(s)
- Takumi Sannomiya
- Department
of Materials Science and Technology, Tokyo
Institute of Technology, 4259 Nagatsuta Midoriku, Yokohama 226-8503, Japan
| | - Taeko Matsukata
- Department
of Materials Science and Technology, Tokyo
Institute of Technology, 4259 Nagatsuta Midoriku, Yokohama 226-8503, Japan
| | - Naoki Yamamoto
- Department
of Materials Science and Technology, Tokyo
Institute of Technology, 4259 Nagatsuta Midoriku, Yokohama 226-8503, Japan
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8
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Ding F. Revolutionizing solid-state single-photon sources with multifunctional metalenses. LIGHT, SCIENCE & APPLICATIONS 2024; 13:21. [PMID: 38233421 PMCID: PMC10794248 DOI: 10.1038/s41377-023-01372-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/19/2024]
Abstract
Ultrathin multifunctional metalenses are demonstrated to control the multiple degrees of freedom of a single-photon source in hexagonal boron nitride.
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Affiliation(s)
- Fei Ding
- Centre for Nano Optics, University of Southern Denmark, Campusvej 55, Odense M, DK-5230, Denmark.
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9
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Liu X, Kan Y, Kumar S, Kulikova LF, Davydov VA, Agafonov VN, Zhao C, Bozhevolnyi SI. Ultracompact Single-Photon Sources of Linearly Polarized Vortex Beams. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024; 36:e2304495. [PMID: 37543837 DOI: 10.1002/adma.202304495] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/12/2023] [Revised: 07/25/2023] [Indexed: 08/07/2023]
Abstract
Ultracompact chip-integrated single-photon sources of collimated beams with polarization-encoded states are crucial for integrated quantum technologies. However, most of currently available single-photon sources rely on external bulky optical components to shape the polarization and phase front of emitted photon beams. Efficient integration of quantum emitters with beam shaping and polarization encoding functionalities remains so far elusive. Here, ultracompact single-photon sources of linearly polarized vortex beams based on chip-integrated quantum emitter-coupled metasurfaces are presented, which are meticulously designed by fully exploiting the potential of nanobrick-arrayed metasurfaces. The authors first demonstrate on-chip single-photon generation of high-purity linearly polarized vortex beams with prescribed topological charges of 0, - 1, and +1. The multiplexing of single-photon emission channels with orthogonal linear polarizations carrying different topological charges are further realized and their entanglement is demonstarated. The work illustrates the potential and feasibility of ultracompact quantum emitter-coupled metasurfaces as a new quantum optics platform for realizing chip-integrated high-dimensional single-photon sources.
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Affiliation(s)
- Xujing Liu
- Institute of Engineering Thermophysics, Shanghai Jiao Tong University, Shanghai, 200240, China
- Center for Nano Optics, University of Southern Denmark, Odense M, DK-5230, Denmark
| | - Yinhui Kan
- Center for Nano Optics, University of Southern Denmark, Odense M, DK-5230, Denmark
| | - Shailesh Kumar
- Center for Nano Optics, University of Southern Denmark, Odense M, DK-5230, Denmark
| | - Liudmilla F Kulikova
- L.F. Vereshchagin Institute for High Pressure Physics, Russian Academy of Sciences, Moscow, 142190, Russia
| | - Valery A Davydov
- L.F. Vereshchagin Institute for High Pressure Physics, Russian Academy of Sciences, Moscow, 142190, Russia
| | | | - Changying Zhao
- Institute of Engineering Thermophysics, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Sergey I Bozhevolnyi
- Center for Nano Optics, University of Southern Denmark, Odense M, DK-5230, Denmark
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10
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Kitzmann WR, Freudenthal J, Reponen APM, VanOrman ZA, Feldmann S. Fundamentals, Advances, and Artifacts in Circularly Polarized Luminescence (CPL) Spectroscopy. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2023; 35:e2302279. [PMID: 37658497 DOI: 10.1002/adma.202302279] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/11/2023] [Revised: 05/06/2023] [Indexed: 09/03/2023]
Abstract
Objects are chiral when they cannot be superimposed with their mirror image. Materials can emit chiral light with an excess of right- or left-handed circular polarization. This circularly polarized luminescence (CPL) is key to promising future applications, such as highly efficient displays, holography, sensing, enantiospecific discrimination, synthesis of drugs, quantum computing, and cryptography. Here, a practical guide to CPL spectroscopy is provided. First, the fundamentals of the technique are laid out and a detailed account of recent experimental advances to achieve highly sensitive and accurate measurements is given, including all corrections required to obtain reliable results. Then the most common artifacts and pitfalls are discussed, especially for the study of thin films, for example, based on molecules, polymers, or halide perovskites, as opposed to dilute solutions of emitters. To facilitate the adoption by others, custom operating software is made publicly available, equipping the reader with the tools needed for successful and accurate CPL determination.
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Affiliation(s)
- Winald R Kitzmann
- Department of Chemistry, Johannes Gutenberg University, Duesbergweg 10-14, 55122, Mainz, Germany
- Rowland Institute, Harvard University, 100 Edwin H. Land Boulevard, Cambridge, MA, 02142, USA
| | - John Freudenthal
- Hinds Instruments Inc., 7245 NE Evergreen Parkway, Hillsboro, OR, 97124, USA
| | - Antti-Pekka M Reponen
- Rowland Institute, Harvard University, 100 Edwin H. Land Boulevard, Cambridge, MA, 02142, USA
| | - Zachary A VanOrman
- Rowland Institute, Harvard University, 100 Edwin H. Land Boulevard, Cambridge, MA, 02142, USA
| | - Sascha Feldmann
- Rowland Institute, Harvard University, 100 Edwin H. Land Boulevard, Cambridge, MA, 02142, USA
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11
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Kan Y, Liu X, Kumar S, Bozhevolnyi SI. Multichannel Quantum Emission with On-Chip Emitter-Coupled Holographic Metasurfaces. ACS NANO 2023; 17:20308-20314. [PMID: 37791727 DOI: 10.1021/acsnano.3c06309] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/05/2023]
Abstract
Multichannel quantum emission is in high demand for advanced quantum photonic applications such as quantum communications, quantum computing, and quantum cryptography. However, to date, the most common way for shaping photon emission from quantum emitters (QEs) is to utilize free-standing (external) bulky optical components. Here, we develop the multichannel holography approach for flexibly designing on-chip QE-coupled metasurfaces that make use of nonradiatively QE-excited surface plasmon polaritons for generating far-field quantum emission, which propagates in designed directions carrying specific spin and orbital angular momenta (SAM and OAM, respectively). We further design, fabricate, and characterize on-chip quantum light sources of multichannel quantum emission encoded with different SAMs and OAMs. The holography-based inverse design approach developed and demonstrated on-chip quantum light sources with multiple degrees of freedoms, thereby enabling a powerful platform for quantum nanophotonics, especially relevant for advanced quantum photonic applications, e.g., high-dimensional quantum information processing.
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Affiliation(s)
- Yinhui Kan
- Center for Nano Optics, University of Southern Denmark, DK-5230 Odense M, Denmark
| | - Xujing Liu
- Center for Nano Optics, University of Southern Denmark, DK-5230 Odense M, Denmark
- Institute of Engineering Thermophysics, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Shailesh Kumar
- Center for Nano Optics, University of Southern Denmark, DK-5230 Odense M, Denmark
| | - Sergey I Bozhevolnyi
- Center for Nano Optics, University of Southern Denmark, DK-5230 Odense M, Denmark
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12
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Komisar D, Kumar S, Kan Y, Meng C, Kulikova LF, Davydov VA, Agafonov VN, Bozhevolnyi SI. Multiple channelling single-photon emission with scattering holography designed metasurfaces. Nat Commun 2023; 14:6253. [PMID: 37803006 PMCID: PMC10558519 DOI: 10.1038/s41467-023-42046-3] [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: 03/07/2023] [Accepted: 09/28/2023] [Indexed: 10/08/2023] Open
Abstract
Channelling single-photon emission in multiple well-defined directions and simultaneously controlling its polarization characteristics is highly desirable for numerous quantum technology applications. We show that this can be achieved by using quantum emitters (QEs) nonradiatively coupled to surface plasmon polaritons (SPPs), which are scattered into outgoing free-propagating waves by appropriately designed metasurfaces. The QE-coupled metasurface design is based on the scattering holography approach with radially diverging SPPs as reference waves. Using holographic metasurfaces fabricated around nanodiamonds with single Ge vacancy centres, we experimentally demonstrate on-chip integrated efficient generation of two well-collimated single-photon beams propagating along different 15° off-normal directions with orthogonal linear polarizations.
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Affiliation(s)
- Danylo Komisar
- Centre for Nano Optics, University of Southern Denmark, DK-5230, Odense M, Denmark.
| | - Shailesh Kumar
- Centre for Nano Optics, University of Southern Denmark, DK-5230, Odense M, Denmark.
| | - Yinhui Kan
- Centre for Nano Optics, University of Southern Denmark, DK-5230, Odense M, Denmark
| | - Chao Meng
- Centre for Nano Optics, University of Southern Denmark, DK-5230, Odense M, Denmark
| | - Liudmila F Kulikova
- L.F. Vereshchagin Institute for High Pressure Physics, Russian Academy of Sciences, Troitsk, Moscow, 142190, Russia
| | - Valery A Davydov
- L.F. Vereshchagin Institute for High Pressure Physics, Russian Academy of Sciences, Troitsk, Moscow, 142190, Russia
| | | | - Sergey I Bozhevolnyi
- Centre for Nano Optics, University of Southern Denmark, DK-5230, Odense M, Denmark
- Danish Institute for Advanced Study, University of Southern Denmark, DK-5230, Odense M, Denmark
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13
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Liu X, Kan Y, Kumar S, Komisar D, Zhao C, Bozhevolnyi SI. On-chip generation of single-photon circularly polarized single-mode vortex beams. SCIENCE ADVANCES 2023; 9:eadh0725. [PMID: 37556533 PMCID: PMC10411890 DOI: 10.1126/sciadv.adh0725] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/08/2023] [Accepted: 07/11/2023] [Indexed: 08/11/2023]
Abstract
Generation of single photons carrying spin and orbital angular momenta (SAM and OAM) opens enticing perspectives for exploiting multiple degrees of freedom for high-dimensional quantum systems. However, on-chip generation of single photons encoded with single-mode SAM-OAM states has been a major challenge. Here, by using carefully designed anisotropic nanodimers fabricated atop a substrate, supporting surface plasmon polariton (SPP) propagation, and accurately positioned around a quantum emitter (QE), we enable nonradiative QE-SPP coupling and the SPP outcoupling into free-space propagating radiation featuring the designed SAM and OAM. We demonstrate on-chip room-temperature generation of well-collimated (divergence < 7.5°) circularly polarized (chirality > 0.97) single-mode vortex beams with different topological charges (𝓁 = 0, 1, and 2) and high single-photon purity, g(2)(0) < 0.15. The developed approach can straightforwardly be extended to produce multiple, differently polarized, single-mode single-photon radiation channels and enable thereby realization of high-dimensional quantum sources for advanced quantum photonic technologies.
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Affiliation(s)
- Xujing Liu
- Institute of Engineering Thermophysics, Shanghai Jiao Tong University, Shanghai 200240, China
- Centre for Nano Optics, University of Southern Denmark, DK-5230 Odense M, Denmark
| | - Yinhui Kan
- Centre for Nano Optics, University of Southern Denmark, DK-5230 Odense M, Denmark
| | - Shailesh Kumar
- Centre for Nano Optics, University of Southern Denmark, DK-5230 Odense M, Denmark
| | - Danylo Komisar
- Centre for Nano Optics, University of Southern Denmark, DK-5230 Odense M, Denmark
| | - Changying Zhao
- Institute of Engineering Thermophysics, Shanghai Jiao Tong University, Shanghai 200240, China
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14
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Liu F, Jia H, Chen Y, Luo X, Huang M, Wang M, Zhang X. Dual-Function Meta-Grating Based on Tunable Fano Resonance for Reflective Filter and Sensor Applications. SENSORS (BASEL, SWITZERLAND) 2023; 23:6462. [PMID: 37514756 PMCID: PMC10383033 DOI: 10.3390/s23146462] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/17/2023] [Revised: 07/06/2023] [Accepted: 07/13/2023] [Indexed: 07/30/2023]
Abstract
Localized surface plasmon resonance (LSPR)-based sensors exhibit enormous potential in the areas of medical diagnosis, food safety regulation and environmental monitoring. However, the broadband spectral lineshape of LSPR hampers the observation of wavelength shifts in sensing processes, thus preventing its widespread applications in sensors. Here, we describe an improved plasmonic sensor based on Fano resonances between LSPR and the Rayleigh anomaly (RA) in a metal-insulator-metal (MIM) meta-grating, which is composed of silver nanoshell array, an isolation grating mask and a continuous gold film. The MIM configuration offers more freedom to control the optical properties of LSPR, RA and the Fano resonance between them. Strong couplings between LSPR and RA formed a series of narrowband reflection peaks (with a linewidth of ~20 nm in full width at half maximum (FWHM) and a reflectivity nearing 100%) within an LSPR-based broadband extinction window in the experiment, making the meta-grating promising for applications of high-efficiency reflective filters. A Fano resonance that is well optimized between LSPR and RA by carefully adjusting the angles of incident light can switch such a nano-device to an improved biological/chemical sensor with a figure of merit (FOM) larger than 57 and capability of detecting the local refractive index changes caused by the bonding of target molecules on the surface of the nano-device. The figure of merit of the hybrid sensor in the detection of target molecules is 6 and 15 times higher than that of the simple RA- and LSPR-based sensors, respectively.
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Affiliation(s)
- Feifei Liu
- College Physics & Materials Science, Tianjin Normal University, Tianjin 300387, China
| | - Haoyu Jia
- College Physics & Materials Science, Tianjin Normal University, Tianjin 300387, China
| | - Yuxue Chen
- College Physics & Materials Science, Tianjin Normal University, Tianjin 300387, China
| | - Xiaoai Luo
- College Physics & Materials Science, Tianjin Normal University, Tianjin 300387, China
| | - Meidong Huang
- College Physics & Materials Science, Tianjin Normal University, Tianjin 300387, China
| | - Meng Wang
- School of Physical Science and Technology, Inner Mongolia University, Hohhot 010021, China
| | - Xinping Zhang
- Institute of Information Photonics Technology, College of Applied Sciences, Beijng University of Technology, Beijing 100124, China
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15
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Ji W, Chang J, Xu HX, Gao JR, Gröblacher S, Urbach HP, Adam AJL. Recent advances in metasurface design and quantum optics applications with machine learning, physics-informed neural networks, and topology optimization methods. LIGHT, SCIENCE & APPLICATIONS 2023; 12:169. [PMID: 37419910 DOI: 10.1038/s41377-023-01218-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/02/2023] [Revised: 05/22/2023] [Accepted: 06/25/2023] [Indexed: 07/09/2023]
Abstract
As a two-dimensional planar material with low depth profile, a metasurface can generate non-classical phase distributions for the transmitted and reflected electromagnetic waves at its interface. Thus, it offers more flexibility to control the wave front. A traditional metasurface design process mainly adopts the forward prediction algorithm, such as Finite Difference Time Domain, combined with manual parameter optimization. However, such methods are time-consuming, and it is difficult to keep the practical meta-atom spectrum being consistent with the ideal one. In addition, since the periodic boundary condition is used in the meta-atom design process, while the aperiodic condition is used in the array simulation, the coupling between neighboring meta-atoms leads to inevitable inaccuracy. In this review, representative intelligent methods for metasurface design are introduced and discussed, including machine learning, physics-information neural network, and topology optimization method. We elaborate on the principle of each approach, analyze their advantages and limitations, and discuss their potential applications. We also summarize recent advances in enabled metasurfaces for quantum optics applications. In short, this paper highlights a promising direction for intelligent metasurface designs and applications for future quantum optics research and serves as an up-to-date reference for researchers in the metasurface and metamaterial fields.
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Affiliation(s)
- Wenye Ji
- Department of Imaging Physics, Delft University of Technology, Lorentzweg 1, 2628 CJ, Delft, The Netherlands
| | - Jin Chang
- Department of Quantum Nanoscience, Delft University of Technology, Lorentzweg 1, 2628 CJ, Delft, The Netherlands.
| | - He-Xiu Xu
- Shaanxi Key Laboratory of Flexible Electronics (KLoFE), Northwestern Polytechnical University (NPU), 127 West Youyi Road, Xi'an, 710072, China.
| | - Jian Rong Gao
- Department of Imaging Physics, Delft University of Technology, Lorentzweg 1, 2628 CJ, Delft, The Netherlands
- SRON Netherlands Institute for Space Research, Niels Bohrweg 4, 2333 CA, Leiden, The Netherlands
| | - Simon Gröblacher
- Department of Quantum Nanoscience, Delft University of Technology, Lorentzweg 1, 2628 CJ, Delft, The Netherlands
| | - H Paul Urbach
- Department of Imaging Physics, Delft University of Technology, Lorentzweg 1, 2628 CJ, Delft, The Netherlands.
| | - Aurèle J L Adam
- Department of Imaging Physics, Delft University of Technology, Lorentzweg 1, 2628 CJ, Delft, The Netherlands
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16
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Yang Y, Seong J, Choi M, Park J, Kim G, Kim H, Jeong J, Jung C, Kim J, Jeon G, Lee KI, Yoon DH, Rho J. Integrated metasurfaces for re-envisioning a near-future disruptive optical platform. LIGHT, SCIENCE & APPLICATIONS 2023; 12:152. [PMID: 37339970 DOI: 10.1038/s41377-023-01169-4] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/21/2022] [Revised: 02/16/2023] [Accepted: 04/24/2023] [Indexed: 06/22/2023]
Abstract
Metasurfaces have been continuously garnering attention in both scientific and industrial fields, owing to their unprecedented wavefront manipulation capabilities using arranged subwavelength artificial structures. To date, research has mainly focused on the full control of electromagnetic characteristics, including polarization, phase, amplitude, and even frequencies. Consequently, versatile possibilities of electromagnetic wave control have been achieved, yielding practical optical components such as metalenses, beam-steerers, metaholograms, and sensors. Current research is now focused on integrating the aforementioned metasurfaces with other standard optical components (e.g., light-emitting diodes, charged-coupled devices, micro-electro-mechanical systems, liquid crystals, heaters, refractive optical elements, planar waveguides, optical fibers, etc.) for commercialization with miniaturization trends of optical devices. Herein, this review describes and classifies metasurface-integrated optical components, and subsequently discusses their promising applications with metasurface-integrated optical platforms including those of augmented/virtual reality, light detection and ranging, and sensors. In conclusion, this review presents several challenges and prospects that are prevalent in the field in order to accelerate the commercialization of metasurfaces-integrated optical platforms.
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Affiliation(s)
- Younghwan Yang
- Department of Mechanical Engineering, Pohang University of Science and Technology (POSTECH), Pohang, 37673, Republic of Korea
| | - Junhwa Seong
- Department of Mechanical Engineering, Pohang University of Science and Technology (POSTECH), Pohang, 37673, Republic of Korea
| | - Minseok Choi
- Department of Mechanical Engineering, Pohang University of Science and Technology (POSTECH), Pohang, 37673, Republic of Korea
| | - Junkyeong Park
- Department of Mechanical Engineering, Pohang University of Science and Technology (POSTECH), Pohang, 37673, Republic of Korea
| | - Gyeongtae Kim
- Department of Mechanical Engineering, Pohang University of Science and Technology (POSTECH), Pohang, 37673, Republic of Korea
| | - Hongyoon Kim
- Department of Mechanical Engineering, Pohang University of Science and Technology (POSTECH), Pohang, 37673, Republic of Korea
| | - Junhyeon Jeong
- Department of Mechanical Engineering, Pohang University of Science and Technology (POSTECH), Pohang, 37673, Republic of Korea
| | - Chunghwan Jung
- Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH), Pohang, 37673, Republic of Korea
| | - Joohoon Kim
- Department of Mechanical Engineering, Pohang University of Science and Technology (POSTECH), Pohang, 37673, Republic of Korea
| | - Gyoseon Jeon
- Research Institute of Industrial Science and Technology (RIST), Pohang, 37673, Republic of Korea
| | - Kyung-Il Lee
- Research Institute of Industrial Science and Technology (RIST), Pohang, 37673, Republic of Korea
| | - Dong Hyun Yoon
- Research Institute of Industrial Science and Technology (RIST), 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.
- POSCO-POSTECH-RIST Convergence Research Center for Flat Optics and Metaphotonics, Pohang, 37673, Republic of Korea.
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17
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Hentschel M, Koshelev K, Sterl F, Both S, Karst J, Shamsafar L, Weiss T, Kivshar Y, Giessen H. Dielectric Mie voids: confining light in air. LIGHT, SCIENCE & APPLICATIONS 2023; 12:3. [PMID: 36587036 PMCID: PMC9805462 DOI: 10.1038/s41377-022-01015-z] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/20/2022] [Revised: 09/27/2022] [Accepted: 10/11/2022] [Indexed: 06/14/2023]
Abstract
Manipulating light on the nanoscale has become a central challenge in metadevices, resonant surfaces, nanoscale optical sensors, and many more, and it is largely based on resonant light confinement in dispersive and lossy metals and dielectrics. Here, we experimentally implement a novel strategy for dielectric nanophotonics: Resonant subwavelength localized confinement of light in air. We demonstrate that voids created in high-index dielectric host materials support localized resonant modes with exceptional optical properties. Due to the confinement in air, the modes do not suffer from the loss and dispersion of the dielectric host medium. We experimentally realize these resonant Mie voids by focused ion beam milling into bulk silicon wafers and experimentally demonstrate resonant light confinement down to the UV spectral range at 265 nm (4.68 eV). Furthermore, we utilize the bright, intense, and naturalistic colours for nanoscale colour printing. Mie voids will thus push the operation of functional high-index metasurfaces into the blue and UV spectral range. The combination of resonant dielectric Mie voids with dielectric nanoparticles will more than double the parameter space for the future design of metasurfaces and other micro- and nanoscale optical elements. In particular, this extension will enable novel antenna and structure designs which benefit from the full access to the modal field inside the void as well as the nearly free choice of the high-index material for novel sensing and active manipulation strategies.
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Affiliation(s)
- Mario Hentschel
- 4th Physics Institute and Research Center SCoPE, University of Stuttgart, Pfaffenwaldring 57, 70569, Stuttgart, Germany.
| | - Kirill Koshelev
- Nonlinear Physics Centre, Research School of Physics, Australian National University, Canberra, ACT, 2601, Australia
| | - Florian Sterl
- 4th Physics Institute and Research Center SCoPE, University of Stuttgart, Pfaffenwaldring 57, 70569, Stuttgart, Germany
| | - Steffen Both
- 4th Physics Institute and Research Center SCoPE, University of Stuttgart, Pfaffenwaldring 57, 70569, Stuttgart, Germany
| | - Julian Karst
- 4th Physics Institute and Research Center SCoPE, University of Stuttgart, Pfaffenwaldring 57, 70569, Stuttgart, Germany
| | - Lida Shamsafar
- 4th Physics Institute and Research Center SCoPE, University of Stuttgart, Pfaffenwaldring 57, 70569, Stuttgart, Germany
| | - Thomas Weiss
- 4th Physics Institute and Research Center SCoPE, University of Stuttgart, Pfaffenwaldring 57, 70569, Stuttgart, Germany
- Institute of Physics, University of Graz, and NAWI Graz, Universitätsplatz 5, 8010, Graz, Austria
| | - Yuri Kivshar
- Nonlinear Physics Centre, Research School of Physics, Australian National University, Canberra, ACT, 2601, Australia.
| | - Harald Giessen
- 4th Physics Institute and Research Center SCoPE, University of Stuttgart, Pfaffenwaldring 57, 70569, Stuttgart, Germany.
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18
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Abstract
AbstractOptical skyrmions have recently been constructed by tailoring vectorial near-field distributions through the interference of multiple surface plasmon polaritons, offering promising features for advanced information processing, transport and storage. Here, we provide experimental demonstration of electromagnetic skyrmions based on magnetic localized spoof plasmons (LSP) showing large topological robustness against continuous deformations, without stringent external interference conditions. By directly measuring the spatial profile of all three vectorial magnetic fields, we reveal multiple π-twist target skyrmion configurations mapped to multi-resonant near-equidistant LSP eigenmodes. The real-space skyrmion topology is robust against deformations of the meta-structure, demonstrating flexible skyrmionic textures for arbitrary shapes. The observed magnetic LSP skyrmions pave the way to ultra-compact and robust plasmonic devices, such as flexible sensors, wearable electronics and ultra-compact antennas.
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19
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Huang H, Zheng S, Sun W. Beam manipulation for quantum dot light-emitting diode with an Ag grating and a phase-gradient metasurface. OPTICS EXPRESS 2022; 30:28345-28357. [PMID: 36299032 DOI: 10.1364/oe.463772] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/12/2022] [Accepted: 07/08/2022] [Indexed: 06/16/2023]
Abstract
The quantum dot (QD) light-emitting diode (LED) is a robust scheme for single photon source. However, the spontaneous emission of a QD LED has arbitrary directions and polarizations, which is disadvantage for photon collection and manipulation. We propose a QD LED integrated with an Ag grating and a phase-gradient metasurface. The circular patterned Ag grating is adopted to collimate the emission beam with right phase and improve its spatial coherence, therefore a phase-gradient metasurface can work for beam manipulation. The 10°, 20°, and 30° angle deflection as well as doughnut-pattern generation are demonstrated by numerical simulation. A small metasurface with the width of 6 µm can provide a collection efficiency of 25.9% at the deflection angle of 10°. Furthermore, only one single QD can be selected from a QD assembly with a low-density.
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20
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Quasi-Bound States in the Continuum Enabled Strong Terahertz Chiroptical Response in Bilayer Metallic Metasurfaces. CRYSTALS 2022. [DOI: 10.3390/cryst12081052] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Bound state in the continuum (BIC) as a novel non-radiating state of light in the continuum of propagating modes has received great attention in photonics. Recently, chiral BICs have been introduced in the terahertz regime. However, strong chiroptical effects of transmitted waves remain challenging to achieve in metallic terahertz metasurfaces, especially for intrinsic chirality at normal incidences. Here, we propose a chiral quasi-BIC by simultaneously breaking the out-of-plane mirror and in-plane C2 rotation symmetries in a bilayer metallic metasurface, in which spin-selective terahertz transmittance is successfully realized. Benefiting from the symmetry-protected nature of our proposed BIC, precise tuning of structural parameters can lead to anticipated chiroptical performance. As a degree of freedom, the rotation angle of the split ring gaps can fully determine the handedness, linewidth, and working frequency with strong circular dichroism. Besides, the sensing performance shows a surrounding refractive index sensitivity of 200 GHz/RIU, which is similar to those of previous works based on terahertz metasurfaces. Taking advantage exclusively of symmetry-protected BICs to realize transmitted terahertz chiroptical response provides fresh insights into the creation of novel BICs, which enables profound advancements in the surging field of novel terahertz devices.
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21
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Guan J, Park JE, Deng S, Tan MJH, Hu J, Odom TW. Light-Matter Interactions in Hybrid Material Metasurfaces. Chem Rev 2022; 122:15177-15203. [PMID: 35762982 DOI: 10.1021/acs.chemrev.2c00011] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
This Review focuses on the integration of plasmonic and dielectric metasurfaces with emissive or stimuli-responsive materials for manipulating light-matter interactions at the nanoscale. Metasurfaces, engineered planar structures with rationally designed building blocks, can change the local phase and intensity of electromagnetic waves at the subwavelength unit level and offers more degrees of freedom to control the flow of light. A combination of metasurfaces and nanoscale emitters facilitates access to weak and strong coupling regimes for enhanced photoluminescence, nanoscale lasing, controlled quantum emission, and formation of exciton-polaritons. In addition to emissive materials, functional materials that respond to external stimuli can be combined with metasurfaces to engineer tunable nanophotonic devices. Emerging metasurface designs including surface-functionalized, chemically tunable, and multilayer hybrid metasurfaces open prospects for diverse applications, including photocatalysis, sensing, displays, and quantum information.
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22
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McDonnell C, Deng J, Sideris S, Li G, Ellenbogen T. Terahertz Metagrating Emitters with Beam Steering and Full Linear Polarization Control. NANO LETTERS 2022; 22:2603-2610. [PMID: 35293750 DOI: 10.1021/acs.nanolett.1c04135] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
We report the realization of broadband THz plasmonic metagrating emitters for simultaneous beam steering and all-optical linear polarization control. Two types of metagratings are designed and experimentally demonstrated. First, the plasmonic meta-atoms are arranged in a metagrating with a binary phase modulation which results in the nonlinear generation of THz waves to the ±1 diffraction orders, with complete suppression of the zeroth order. Complete tunability of the diffracted THz linear polarization direction is demonstrated through simple rotation of the pump polarization. Then, the concept of lateral phase shift is introduced into the design of the metagratings using interlaced phase gradients. By controlling the spatial shift of the submetagrating, we are able to continuously control the linear polarization states of the generated THz waves. This method results in a higher nonlinear diffraction efficiency relative to binary phase modulation. These functional THz metagratings show exciting promise to meet the challenges associated with the current diverse array of applications utilizing THz technology.
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Affiliation(s)
- Cormac McDonnell
- Department of Physical Electronics, School of Electrical Engineering, Tel-Aviv University, 6997801 Tel Aviv, Israel
- Center for Light-Matter Interaction, Tel-Aviv University, 6779801 Tel-Aviv, Israel
| | - Junhong Deng
- Shenzhen Institute for Quantum Science and Engineering, Southern University of Science and Technology, 518055 Shenzhen, China
- Department of Materials Science and Engineering, Southern University of Science and Technology, 518055 Shenzhen, China
| | - Symeon Sideris
- Department of Physical Electronics, School of Electrical Engineering, Tel-Aviv University, 6997801 Tel Aviv, Israel
- Center for Light-Matter Interaction, Tel-Aviv University, 6779801 Tel-Aviv, Israel
| | - Guixin Li
- Shenzhen Institute for Quantum Science and Engineering, Southern University of Science and Technology, 518055 Shenzhen, China
- Department of Materials Science and Engineering, Southern University of Science and Technology, 518055 Shenzhen, China
| | - Tal Ellenbogen
- Department of Physical Electronics, School of Electrical Engineering, Tel-Aviv University, 6997801 Tel Aviv, Israel
- Center for Light-Matter Interaction, Tel-Aviv University, 6779801 Tel-Aviv, Israel
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23
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Hong YH, Hsu WC, Tsai WC, Huang YW, Chen SC, Kuo HC. Ultracompact Nanophotonics: Light Emission and Manipulation with Metasurfaces. NANOSCALE RESEARCH LETTERS 2022; 17:41. [PMID: 35366127 PMCID: PMC8976740 DOI: 10.1186/s11671-022-03680-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/29/2022] [Accepted: 03/20/2022] [Indexed: 05/09/2023]
Abstract
Internet of Things (IoT) technology is prosperous for the betterment of human well-being. With the expeditious needs of miniature functional devices and systems for adaptive optics and light manipulation at will, relevant sensing techniques are thus in the urgent stage of development. Extensive developments in ultrathin artificial structures, namely metasurfaces, are paving the way for the next-generation devices. A bunch of tunable and reconfigurable metasurfaces with diversified catalogs of mechanisms have been developed recently, enabling dynamic light modulation on demand. On the other hand, monolithic integration of metasurfaces and light-emitting sources form ultracompact meta-devices as well as exhibiting desired functionalities. Photon-matter interaction provides revolution in more compact meta-devices, manipulating light directly at the source. This study presents an outlook on this merging paradigm for ultracompact nanophotonics with metasurfaces, also known as metaphotonics. Recent advances in the field hold great promise for the novel photonic devices with light emission and manipulation in simplicity.
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Affiliation(s)
- Yu-Heng Hong
- Semiconductor Research Center, Hon Hai Research Institute, Taipei, 11492 Taiwan
| | - Wen-Cheng Hsu
- Semiconductor Research Center, Hon Hai Research Institute, Taipei, 11492 Taiwan
- Department of Photonics, National Yang Ming Chiao Tung University, Hsinchu, 30010 Taiwan
| | - Wei-Cheng Tsai
- Department of Photonics, National Yang Ming Chiao Tung University, Hsinchu, 30010 Taiwan
| | - Yao-Wei Huang
- Department of Photonics, National Yang Ming Chiao Tung University, Hsinchu, 30010 Taiwan
| | - Shih-Chen Chen
- Semiconductor Research Center, Hon Hai Research Institute, Taipei, 11492 Taiwan
| | - Hao-Chung Kuo
- Semiconductor Research Center, Hon Hai Research Institute, Taipei, 11492 Taiwan
- Department of Photonics, National Yang Ming Chiao Tung University, Hsinchu, 30010 Taiwan
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24
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Hu H, Chen W, Han X, Wang K, Lu P. Plasmonic nanobar-on-mirror antenna with giant local chirality: a new platform for ultrafast chiral single-photon emission. NANOSCALE 2022; 14:2287-2295. [PMID: 35081195 DOI: 10.1039/d1nr05951c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Providing an additional degree of freedom for binary information encoding and nonreciprocal information transmission, chiral single photons have become a new research frontier in quantum optics. Without using complex external conditions (e.g., magnetic field, low temperature), coupling emitters to chiral optical antennas has become a promising strategy to efficiently convert single photons from linear to circular polarization states. For ideal chiral single-photon sources, essential properties such as giant Purcell factor, large degree of circular polarization (DCP), and high collection efficiency are highly demanded. Herein, to meet these combined requirements, we propose an emitter-coupled nanobar-on-mirror antenna platform with significant local chirality acquired from the broken symmetry, as well as the giant Purcell factor owing to its ultrasmall mode volume. An emitter embedded at the corner in the gap exhibits above 3 orders of magnitude enhancement of the chiral spontaneous emission with more than 80% collection efficiency, along with up to 70% DCP. Compatible with a myriad of nanoscale quantum emitters (e.g. transition metal dichalcogenides, color centers, quantum dots, etc.), this platform, not only manifests the potential for realizing ultrafast chiral single-photon generator towards GHz and THz operation speed but also provides versatile testbeds for investigating chiral light-matter interaction at the single-quantum level.
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Affiliation(s)
- Huatian Hu
- Hubei Key Laboratory of Optical Information and Pattern Recognition, Wuhan Institute of Technology, Wuhan 430205, China.
| | - Wen Chen
- Ecole Polytechnique Fédérale de Lausanne, Laboratory of Quantum and Nano-Optics, Lausanne, Switzerland
| | - Xiaobo Han
- Hubei Key Laboratory of Optical Information and Pattern Recognition, Wuhan Institute of Technology, Wuhan 430205, China.
| | - Kai Wang
- Wuhan National Laboratory for Optoelectronics and School of Physics, Huazhong University of Science and Technology, Wuhan 430074, China.
| | - Peixiang Lu
- Hubei Key Laboratory of Optical Information and Pattern Recognition, Wuhan Institute of Technology, Wuhan 430205, China.
- Wuhan National Laboratory for Optoelectronics and School of Physics, Huazhong University of Science and Technology, Wuhan 430074, China.
- Guangdong Intelligent Robotics Institute, Dongguan 523808, China
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25
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Wu C, Kumar S, Kan Y, Komisar D, Wang Z, Bozhevolnyi SI, Ding F. Room-temperature on-chip orbital angular momentum single-photon sources. SCIENCE ADVANCES 2022; 8:eabk3075. [PMID: 35020431 PMCID: PMC8754403 DOI: 10.1126/sciadv.abk3075] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
On-chip photon sources carrying orbital angular momentum (OAM) are in demand for high-capacity optical information processing in both classical and quantum regimes. However, currently exploited integrated OAM sources have been primarily limited to the classical regime. Here, we demonstrate a room-temperature on-chip integrated OAM source that emits well-collimated single photons, with a single-photon purity of g(2)(0) ≈ 0.22, carrying entangled spin and OAM states and forming two spatially separated entangled radiation channels with different polarization properties. The OAM-encoded single photons are generated by efficiently outcoupling diverging surface plasmon polaritons excited with a deterministically positioned quantum emitter via Archimedean spiral gratings. Our OAM single-photon source platform bridges the gap between conventional OAM manipulation and nonclassical light sources, enabling high-dimensional and large-scale photonic quantum systems for quantum information processing.
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Affiliation(s)
- Cuo Wu
- Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu 610054, China
- Centre for Nano Optics, University of Southern Denmark, Campusvej 55, Odense M DK-5230, Denmark
| | - Shailesh Kumar
- Centre for Nano Optics, University of Southern Denmark, Campusvej 55, Odense M DK-5230, Denmark
| | - Yinhui Kan
- Centre for Nano Optics, University of Southern Denmark, Campusvej 55, Odense M DK-5230, Denmark
- College of Astronautics, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China
| | - Danylo Komisar
- Centre for Nano Optics, University of Southern Denmark, Campusvej 55, Odense M DK-5230, Denmark
| | - Zhiming Wang
- Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu 610054, China
| | - Sergey I. Bozhevolnyi
- Centre for Nano Optics, University of Southern Denmark, Campusvej 55, Odense M DK-5230, Denmark
| | - Fei Ding
- Centre for Nano Optics, University of Southern Denmark, Campusvej 55, Odense M DK-5230, Denmark
- Corresponding author.
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26
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Abstract
Optical skyrmions have recently been constructed by tailoring vectorial near-field distributions through the interference of multiple surface plasmon polaritons, offering promising features for advanced information processing, transport and storage. Here, we provide experimental demonstration of electromagnetic skyrmions based on magnetic localized spoof plasmons (LSP) showing large topological robustness against continuous deformations, without stringent external interference conditions. By directly measuring the spatial profile of all three vectorial magnetic fields, we reveal multiple π-twist target skyrmion configurations mapped to multi-resonant near-equidistant LSP eigenmodes. The real-space skyrmion topology is robust against deformations of the meta-structure, demonstrating flexible skyrmionic textures for arbitrary shapes. The observed magnetic LSP skyrmions pave the way to ultra-compact and robust plasmonic devices, such as flexible sensors, wearable electronics and ultra-compact antennas.
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27
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Gao W, Huang C, Feng Z, Li M, Dong J. Circular dichroism metamirror with diversified chiral molecules combinations. OPTICS EXPRESS 2021; 29:33367-33379. [PMID: 34809150 DOI: 10.1364/oe.438872] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/03/2021] [Accepted: 09/17/2021] [Indexed: 06/13/2023]
Abstract
In this paper, we propose a giant circular dichroism (CD) chiral metamirror that differentially absorbs circularly polarized (CP) waves with dual/multi bands. The structure is composed of two variable τ resonators with counter split opening directions and different eigenfrequencies. Even more important, these two resonators are aligned vertically, and then integrated into one periodical unit cell, which results in the high-efficiency absorptive CD. The chiral metamirror has a narrow-band absorption of the left-handed circularly polarized (LCP) wave for lower resonance, and a broadband absorption of the right-handed circularly polarized (RCP) wave in the higher-frequency range. Optical resonator designs with diversified chiral molecules combinations are further studied in detail. Through the study of different periodic arrangements, parameters scanning optimization, and power loss distributions, it is proved that the overall permutation symmetry breakdown of total combined chiral molecules is the determining factor for the absorptive CD. Based on the principle in the microwave model, two mid-infrared chiral metamirrors are further realized, which can still show good spin-dependent absorption. This multi-polarization and multifunction response advance novel photonic devices for a variety of applications including CP laser, biomolecules detection, and energy harvester.
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Wang J, Shen L, Zhou W. A bibliometric analysis of quantum computing literature: mapping and evidences from scopus. TECHNOLOGY ANALYSIS & STRATEGIC MANAGEMENT 2021. [DOI: 10.1080/09537325.2021.1963429] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Jiaxing Wang
- College of Computer Science, Zhejiang University of Technology, Hangzhou, People’s Republic of China
| | - Lihua Shen
- The Library of Zhejiang University, Hangzhou, People’s Republic of China
| | - Wuyuan Zhou
- Zhejiang Academy of Science and Technology Information, Hangzhou, People’s Republic of China
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29
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Kort-Kamp WJM, Azad AK, Dalvit DAR. Space-Time Quantum Metasurfaces. PHYSICAL REVIEW LETTERS 2021; 127:043603. [PMID: 34355970 DOI: 10.1103/physrevlett.127.043603] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/25/2021] [Accepted: 06/04/2021] [Indexed: 06/13/2023]
Abstract
Metasurfaces have recently entered the realm of quantum photonics, enabling manipulation of quantum light using a compact nanophotonic platform. Realizing the full potential of metasurfaces at the deepest quantum level requires the ability to tune coherent light-matter interactions continuously in space and time. Here, we introduce the concept of space-time quantum metasurfaces for arbitrary control of the spectral, spatial, and spin properties of nonclassical light using a compact photonic platform. We show that space-time quantum metasurfaces allow on-demand tailoring of entanglement among all degrees of freedom of a single photon. We also show that spatiotemporal modulation induces asymmetry at the fundamental level of quantum fluctuations, resulting in the generation of steered and vortex photon pairs out of vacuum. Space-time quantum metasurfaces have the potential to enable novel photonic functionalities, such as encoding quantum information into high-dimensional color qudits using designer modulation protocols, sculpting multispectral and multispatial modes in spontaneous emission, and generating reconfigurable hyperentanglement for high-capacity quantum communications.
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Affiliation(s)
| | - Abul K Azad
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - Diego A R Dalvit
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
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30
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Balduf T, Caricato M. Gauge Dependence of the S̃ Molecular Orbital Space Decomposition of Optical Rotation. J Phys Chem A 2021; 125:4976-4985. [PMID: 34086473 DOI: 10.1021/acs.jpca.1c01653] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The measurement of optical rotation (OR) is a foundational technique for the detection and characterization of chiral molecules, but it is poorly understood how the observed property relates to the structure of the molecule. Over the years, several schemes have been developed to decompose the OR into more chemically intuitive contributions. In this paper, we introduce two alternative formulations of our previously developed S̃ molecular orbital space decomposition. These new expressions use the modified velocity gauge-magnetic (MVG-M) and -electric (MVG-E) definitions of OR, rather than the length gauge-magnetic (LG-M) definition used in the original paper. Comparing these formulations across a small set of previously studied chiral molecules, we find that these different definitions produce consistent physical interpretations of the OR. These results demonstrate that the S̃ methodology for investigations of structure-property relationships in chiral molecules is insensitive to the choice of gauge.
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Affiliation(s)
- Ty Balduf
- Department of Chemistry, University of Kansas, 1567 Irving Hill Road, Lawrence, Kansas 66045, United States
| | - Marco Caricato
- Department of Chemistry, University of Kansas, 1567 Irving Hill Road, Lawrence, Kansas 66045, United States
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31
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Meng C, Thrane PCV, Ding F, Gjessing J, Thomaschewski M, Wu C, Dirdal C, Bozhevolnyi SI. Dynamic piezoelectric MEMS-based optical metasurfaces. SCIENCE ADVANCES 2021; 7:eabg5639. [PMID: 34162551 PMCID: PMC8221626 DOI: 10.1126/sciadv.abg5639] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/15/2021] [Accepted: 05/11/2021] [Indexed: 05/05/2023]
Abstract
Optical metasurfaces (OMSs) have shown unprecedented capabilities for versatile wavefront manipulations at the subwavelength scale. However, most well-established OMSs are static, featuring well-defined optical responses determined by OMS configurations set during their fabrication, whereas dynamic OMS configurations investigated so far often exhibit specific limitations and reduced reconfigurability. Here, by combining a thin-film piezoelectric microelectromechanical system (MEMS) with a gap-surface plasmon-based OMS, we develop an electrically driven dynamic MEMS-OMS platform that offers controllable phase and amplitude modulation of the reflected light by finely actuating the MEMS mirror. Using this platform, we demonstrate MEMS-OMS components for polarization-independent beam steering and two-dimensional (2D) focusing with high modulation efficiencies (~50%), broadband operation (~20% near the operating wavelength of 800 nanometers), and fast responses (<0.4 milliseconds). The developed MEMS-OMS platform offers flexible solutions for realizing complex dynamic 2D wavefront manipulations that could be used in reconfigurable and adaptive optical networks and systems.
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Affiliation(s)
- Chao Meng
- Centre for Nano Optics, University of Southern Denmark, Campusvej 55, Odense DK-5230, Denmark
| | - Paul C V Thrane
- SINTEF Microsystems and Nanotechnology, Gaustadalleen 23C, 0737 Oslo, Norway
| | - Fei Ding
- Centre for Nano Optics, University of Southern Denmark, Campusvej 55, Odense DK-5230, Denmark
| | - Jo Gjessing
- SINTEF Microsystems and Nanotechnology, Gaustadalleen 23C, 0737 Oslo, Norway
| | - Martin Thomaschewski
- Centre for Nano Optics, University of Southern Denmark, Campusvej 55, Odense DK-5230, Denmark
| | - Cuo Wu
- Centre for Nano Optics, University of Southern Denmark, Campusvej 55, Odense DK-5230, Denmark
- Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu 610054, China
| | - Christopher Dirdal
- SINTEF Microsystems and Nanotechnology, Gaustadalleen 23C, 0737 Oslo, Norway.
| | - Sergey I Bozhevolnyi
- Centre for Nano Optics, University of Southern Denmark, Campusvej 55, Odense DK-5230, Denmark.
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32
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Cheng B, Wang L, Zou Y, Lv L, Li C, Xu Y, Song G. Large bandwidth and high-efficiency plasmonic quarter-wave plate. OPTICS EXPRESS 2021; 29:16939-16949. [PMID: 34154246 DOI: 10.1364/oe.426006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/24/2021] [Accepted: 05/11/2021] [Indexed: 06/13/2023]
Abstract
A large bandwidth and high-efficiency subwavelength quarter-wave plate (QWP) is an indispensable component of an integrated miniaturized optical system. The bandwidth of existing plasmonic quarter-wave plates with a transmission efficiency of more than 50% is less than 320 nm in the near-infrared band. In this paper, a metallic quarter-wave plate with a bandwidth of 600 nm (0.95-1.55 µm) and an average transmittance of more than 70% has been designed and shows excellent potential to be used in miniaturized optical polarization detection systems and as an optical data storage device. For TE mode incident waves, this miniaturized optical element can be equivalent to a Fabry-Pérot (FP) resonator. Meanwhile, for the TM mode incident wave, the transmission characteristics of this structure are controlled by gap surface plasmon polaritons (G-SPPs) existing in the symmetric metal/insulator/metal (MIM) configuration.
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33
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Matsukata T, García de Abajo FJ, Sannomiya T. Chiral Light Emission from a Sphere Revealed by Nanoscale Relative-Phase Mapping. ACS NANO 2021; 15:2219-2228. [PMID: 32845613 PMCID: PMC7906114 DOI: 10.1021/acsnano.0c05624] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
Circularly polarized light (CPL) is currently receiving much attention as a key ingredient for next-generation information technologies, such as quantum communication and encryption. CPL photon generation used in those applications is commonly realized by coupling achiral optical quantum emitters to chiral nanoantennas. Here, we explore a different strategy consisting in exciting a nanosphere-the ultimate symmetric structure-to produce CPL emission along an arbitrary direction. Specifically, we demonstrate chiral emission from a silicon nanosphere induced by an electron beam based on two different strategies: either shifting the relative phase of degenerate orthogonal dipole modes or interfering electric and magnetic modes. We prove these concepts both theoretically and experimentally by visualizing the phase and polarization using a fully polarimetric four-dimensional cathodoluminescence method. Besides their fundamental interest, our results support the use of free-electron-induced light emission from spherically symmetric systems as a versatile platform for the generation of chiral light with on-demand control over the phase and degree of polarization.
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Affiliation(s)
- Taeko Matsukata
- Department
of Materials Science and Technology, Tokyo
Institute of Technology, 4259 Nagatsuta Midoriku, Yokohama 226-8503, Japan
- RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - F. Javier García de Abajo
- ICFO-Institut
de Ciencies Fotoniques, The Barcelona Institute of Science and Technology, Castelldefels, 08860 Barcelona, Spain
- ICREA-Institució
Catalana de Recerca i Estudis Avancats, Passeig Lluís Companys 23, 08010 Barcelona, Spain
| | - Takumi Sannomiya
- Department
of Materials Science and Technology, Tokyo
Institute of Technology, 4259 Nagatsuta Midoriku, Yokohama 226-8503, Japan
- PRESTO, 4259 Nagatsuta Midoriku, Yokohama 226-8503, Japan
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34
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Abstract
Chiral photons have the potential to advance information technologies due to their robustness in carrying binary data against noisy backgrounds as well as their capacity for constructing single-photon isolators and circulators through nonreciprocal photon propagation. In this Perspective, we highlight recent efforts to generate chiral single photons using circularly polarized light sources. We delve into possible future technologies that integrate these light sources with other active optical elements as a versatile platform for information processing.
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Affiliation(s)
- Disheng Chen
- Division of Physics and Applied Physics, and The Photonics Institute and Centre for Disruptive Photonic Technologies, Nanyang Technological University, Singapore 637371
| | - Ruihua He
- Department of Chemistry, National University of Singapore, Singapore 117543
| | - Hongbing Cai
- Division of Physics and Applied Physics, and The Photonics Institute and Centre for Disruptive Photonic Technologies, Nanyang Technological University, Singapore 637371
| | - Xiaogang Liu
- Department of Chemistry, National University of Singapore, Singapore 117543
| | - Weibo Gao
- Division of Physics and Applied Physics, and The Photonics Institute and Centre for Disruptive Photonic Technologies, Nanyang Technological University, Singapore 637371
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35
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Kumar S, Wu C, Komisar D, Kan Y, Kulikova LF, Davydov VA, Agafonov VN, Bozhevolnyi SI. Fluorescence enhancement of a single germanium vacancy center in a nanodiamond by a plasmonic Bragg cavity. J Chem Phys 2021; 154:044303. [PMID: 33514119 DOI: 10.1063/5.0033507] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Germanium vacancy (GeV) centers in diamonds constitute a promising platform for single-photon sources to be used in quantum information technologies. Emission from these color centers can be enhanced by utilizing a cavity that is resonant at the peak emission wavelength. We investigate circular plasmonic Bragg cavities for enhancing the emission from single GeV centers in nanodiamonds (NDs) at the zero phonon line. Following simulations of the enhancement for different configuration parameters, the appropriately designed Bragg cavities together with out-coupling gratings composed of hydrogen silsesquioxane ridges are fabricated around the NDs containing nitrogen vacancy centers deposited on a silica-coated silver surface. We characterize the fabricated configurations and finely tune the cavity parameters to match the GeV emission. Finally, we fabricate the cavity containing a single GeV-ND and compare the total decay-rate before and after cavity fabrication, finding a decay-rate enhancement of ∼5.5 and thereby experimentally confirming the feasibility of emission enhancement with circular plasmonic cavities.
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Affiliation(s)
- Shailesh Kumar
- Centre for Nano Optics, University of Southern Denmark, Campusvej 55, Odense M DK-5230, Denmark
| | - Cuo Wu
- Centre for Nano Optics, University of Southern Denmark, Campusvej 55, Odense M DK-5230, Denmark
| | - Danylo Komisar
- Centre for Nano Optics, University of Southern Denmark, Campusvej 55, Odense M DK-5230, Denmark
| | - Yinhui Kan
- Centre for Nano Optics, University of Southern Denmark, Campusvej 55, Odense M DK-5230, Denmark
| | - Liudmilla F Kulikova
- L.F. Vereshchagin Institute for High Pressure Physics, Russian Academy of Sciences, Troitsk, Moscow 142190, Russia
| | - Valery A Davydov
- L.F. Vereshchagin Institute for High Pressure Physics, Russian Academy of Sciences, Troitsk, Moscow 142190, Russia
| | | | - Sergey I Bozhevolnyi
- Centre for Nano Optics, University of Southern Denmark, Campusvej 55, Odense M DK-5230, Denmark
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36
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Sun W, Liu Y, Qu G, Fan Y, Dai W, Wang Y, Song Q, Han J, Xiao S. Lead halide perovskite vortex microlasers. Nat Commun 2020; 11:4862. [PMID: 32978397 PMCID: PMC7519163 DOI: 10.1038/s41467-020-18669-1] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2020] [Accepted: 09/01/2020] [Indexed: 11/09/2022] Open
Abstract
Lead halide perovskite microlasers have been very promising for versatile optoelectronic applications. However, most perovskite microlasers are linearly polarized with uniform wavefront. The structured laser beams carrying orbital angular momentum have rarely been studied and the applications of perovskites in next-generation optical communications are thus hindered. Herein, we experimentally demonstrate the perovskite vortex microlasers with highly directional outputs and well−controlled topological charges. High quality gratings have been experimentally fabricated in perovskite film and the subsequent vertical cavity surface emitting lasers (VCSELs) with divergent angles of 3o are achieved. With the control of Archimedean spiral gratings, the wavefront of the perovskite VCSELs has been switched to be helical with topological charges of q = −4 to 4. This research is able to expand the potential applications of perovskite microlasers in hybrid integrated photonic networks, as well as optical computing. Integration of III-V semiconductor microlasers into modern Si or Si3N4 based photonic integrated circuits remains a challenge. Here, the authors demonstrate a perovskite vortex microlaser with highly directional outputs and well-controlled topological charges that is highly compatible with most materials.
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Affiliation(s)
- Wenzhao Sun
- State Key Laboratory on Tunable laser Technology, Ministry of Industry and Information Technology Key Lab of Micro-Nano Optoelectronic Information System, Shenzhen Graduate School, Harbin Institute of Technology, Shenzhen, 518055, P.R. China
| | - Yilin Liu
- State Key Laboratory on Tunable laser Technology, Ministry of Industry and Information Technology Key Lab of Micro-Nano Optoelectronic Information System, Shenzhen Graduate School, Harbin Institute of Technology, Shenzhen, 518055, P.R. China
| | - Geyang Qu
- State Key Laboratory on Tunable laser Technology, Ministry of Industry and Information Technology Key Lab of Micro-Nano Optoelectronic Information System, Shenzhen Graduate School, Harbin Institute of Technology, Shenzhen, 518055, P.R. China
| | - Yubin Fan
- State Key Laboratory on Tunable laser Technology, Ministry of Industry and Information Technology Key Lab of Micro-Nano Optoelectronic Information System, Shenzhen Graduate School, Harbin Institute of Technology, Shenzhen, 518055, P.R. China
| | - Wei Dai
- State Key Laboratory on Tunable laser Technology, Ministry of Industry and Information Technology Key Lab of Micro-Nano Optoelectronic Information System, Shenzhen Graduate School, Harbin Institute of Technology, Shenzhen, 518055, P.R. China
| | - Yuhan Wang
- State Key Laboratory on Tunable laser Technology, Ministry of Industry and Information Technology Key Lab of Micro-Nano Optoelectronic Information System, Shenzhen Graduate School, Harbin Institute of Technology, Shenzhen, 518055, P.R. China
| | - Qinghai Song
- State Key Laboratory on Tunable laser Technology, Ministry of Industry and Information Technology Key Lab of Micro-Nano Optoelectronic Information System, Shenzhen Graduate School, Harbin Institute of Technology, Shenzhen, 518055, P.R. China.,Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan, 030006, Shanxi, P.R. China
| | - Jiecai Han
- National Key Laboratory of Science and Technology on Advanced Composites in Special Environments, Harbin Institute of Technology, Harbin, 150080, P.R. China
| | - Shumin Xiao
- State Key Laboratory on Tunable laser Technology, Ministry of Industry and Information Technology Key Lab of Micro-Nano Optoelectronic Information System, Shenzhen Graduate School, Harbin Institute of Technology, Shenzhen, 518055, P.R. China. .,Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan, 030006, Shanxi, P.R. China. .,National Key Laboratory of Science and Technology on Advanced Composites in Special Environments, Harbin Institute of Technology, Harbin, 150080, P.R. China.
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37
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Cao Y, Tang L, Li J, Wang J, Dong ZG. Dual-wavelength complementary grayscale imaging by an ultrathin metasurface. OPTICS LETTERS 2020; 45:5181-5184. [PMID: 32932483 DOI: 10.1364/ol.403229] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/20/2020] [Accepted: 08/11/2020] [Indexed: 06/11/2023]
Abstract
It is important to arbitrarily manipulate optical intensity, an important degree of freedom to light, on microscales, which is a fundamental requirement for integration and miniaturization of optical devices. Metasurfaces have shown unprecedented capabilities for manipulating light in terms of phase, intensity, and polarization. Here, an ultrathin metasurface composed of silver nanorods illuminated by linearly polarized light is demonstrated to manipulate optical intensity in subwavelength scales. By modulating rod orientations, gradient reflectance of light can be achieved on dual-wavelength regimes with contrast reflection intensities. Further, a nanorod metasurface, embedded with a picture of a panda profile, is experimentally designed for grayscale imaging, and the measurements demonstrate that two complementary grayscale images can be displayed at 633 and 900 nm. The grayscale imaging by a proposed ultrathin metasurface with dual-wavelength, complementary, and subwavelength-resolution characteristics provides a simple but efficient way for tailoring optical intensity on subwavelength scales, which is promising for a variety of applications such as encryption and decryption, display, information security, and optical communication.
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