1
|
Lee D, Shin W, Park S, Kim J, Shin H. NOON-state interference in the frequency domain. LIGHT, SCIENCE & APPLICATIONS 2024; 13:90. [PMID: 38622155 PMCID: PMC11018870 DOI: 10.1038/s41377-024-01439-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/01/2023] [Revised: 02/26/2024] [Accepted: 03/25/2024] [Indexed: 04/17/2024]
Abstract
The examination of entanglement across various degrees of freedom has been pivotal in augmenting our understanding of fundamental physics, extending to high dimensional quantum states, and promising the scalability of quantum technologies. In this paper, we demonstrate the photon number path entanglement in the frequency domain by implementing a frequency beam splitter that converts the single-photon frequency to another with 50% probability using Bragg scattering four-wave mixing. The two-photon NOON state in a single-mode fiber is generated in the frequency domain, manifesting the two-photon interference with two-fold enhanced resolution compared to that of single-photon interference, showing the outstanding stability of the interferometer. This successful translation of quantum states in the frequency domain will pave the way toward the discovery of fascinating quantum phenomena and scalable quantum information processing.
Collapse
Affiliation(s)
- Dongjin Lee
- Department of Physics, Pohang University of Science and Technology (POSTECH), Pohang, 37673, South Korea
| | - Woncheol Shin
- Department of Physics, Pohang University of Science and Technology (POSTECH), Pohang, 37673, South Korea
| | - Sebae Park
- Department of Physics, Pohang University of Science and Technology (POSTECH), Pohang, 37673, South Korea
| | - Junyeop Kim
- Department of Physics, Pohang University of Science and Technology (POSTECH), Pohang, 37673, South Korea
| | - Heedeuk Shin
- Department of Physics, Pohang University of Science and Technology (POSTECH), Pohang, 37673, South Korea.
| |
Collapse
|
2
|
Bashan G, Eyal A, Tur M, Arie A. All-optical Stern-Gerlach effect in the time domain. OPTICS EXPRESS 2024; 32:9589-9601. [PMID: 38571189 DOI: 10.1364/oe.510722] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2023] [Accepted: 02/09/2024] [Indexed: 04/05/2024]
Abstract
The Stern-Gerlach experiment, a seminal quantum physics experiment, demonstrated the intriguing phenomenon of particle spin quantization, leading to applications in matter-wave interferometry and weak-value measurements. Over the years, several optical experiments have exhibited similar behavior to the Stern-Gerlach experiment, revealing splitting in both spatial and angular domains. Here we show, theoretically and experimentally, that the Stern-Gerlach effect can be extended into the time and frequency domains. By harnessing Kerr nonlinearity in optical fibers, we couple signal and idler pulses using two pump pulses, resulting in the emergence of two distinct eigenstates whereby the signal and idler are either in phase or out of phase. This nonlinear coupling emulates a synthetic magnetization, and by varying it linearly in time, one eigenstate deflects towards a higher frequency, while the other deflects towards a lower frequency. This effect can be utilized to realize an all-optical, phase-sensitive frequency beam splitter, establishing a new paradigm for classical and quantum data processing of frequency-bin superposition states.
Collapse
|
3
|
Hurvitz I, Karnieli A, Arie A. Frequency-domain engineering of bright squeezed vacuum for continuous-variable quantum information. OPTICS EXPRESS 2023; 31:20387-20397. [PMID: 37381434 DOI: 10.1364/oe.489606] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/16/2023] [Accepted: 05/13/2023] [Indexed: 06/30/2023]
Abstract
Multimode bright squeezed vacuum is a non-classical state of light hosting a macroscopic photon number while offering promising capacity for encoding quantum information in its spectral degree of freedom. Here, we employ an accurate model for parametric down-conversion in the high-gain regime and use nonlinear holography to design quantum correlations of bright squeezed vacuum in the frequency domain. We propose the design of quantum correlations over two-dimensional lattice geometries that are all-optically controlled, paving the way toward continuous-variable cluster state generation on an ultrafast timescale. Specifically, we investigate the generation of a square cluster state in the frequency domain and calculate its covariance matrix and the quantum nullifier uncertainties, that exhibit squeezing below the vacuum noise level.
Collapse
|
4
|
Andrea Sabattoli F, Gianini L, Simbula A, Clementi M, Fincato A, Boeuf F, Liscidini M, Galli M, Bajoni D. Silicon source of frequency-bin entangled photons. OPTICS LETTERS 2022; 47:6201-6204. [PMID: 37219207 DOI: 10.1364/ol.471241] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/22/2022] [Accepted: 11/01/2022] [Indexed: 05/24/2023]
Abstract
We demonstrate an integrated source of frequency-entangled photon pairs on a silicon photonics chip. The emitter has a coincidence-to-accidental ratio exceeding 103. We prove entanglement by showing two-photon frequency interference with a visibility of 94.6% ± 1.1%. This result opens the possibility of on-chip integration of frequency-bin sources with modulators and the other active and passive devices available in the silicon photonics platform.
Collapse
|
5
|
Aguayo-Alvarado AL, Domínguez-Serna F, Cruz WDL, Garay-Palmett K. An integrated photonic circuit for color qubit preparation by third-order nonlinear interactions. Sci Rep 2022; 12:5154. [PMID: 35338208 PMCID: PMC8956746 DOI: 10.1038/s41598-022-09116-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2021] [Accepted: 03/15/2022] [Indexed: 12/01/2022] Open
Abstract
This work presents a feasible design of an integrated photonic circuit performing as a device for single-qubit preparation and rotations through the third-order nonlinear process of difference frequency generation (DFG) and defined in the temporal mode basis. The first stage of our circuit includes the generation of heralded single photons by spontaneous four-wave mixing in a micro-ring cavity engineered for delivering a single-photon state in a unique temporal mode. The second stage comprises the implementation of DFG in a spiral waveguide with controlled dispersion properties for reaching color qubit preparation fidelity close to unity. We present the generalized rotation operator related to the DFG process, a methodology for the device design, and qubit preparation fidelity results as a function of user-accessible parameters.
Collapse
Affiliation(s)
- A L Aguayo-Alvarado
- Departamento de Óptica - Centro de Investigación Científica y de Educación Superior de, Ensenada, BC, 22860, México
| | - F Domínguez-Serna
- Cátedras Conacyt - Centro de Investigación Científica y de Educación Superior de, Ensenada, B.C., 22860, México
| | - W De La Cruz
- Centro de Nanociencias y Nanotecnología, Universidad Nacional Autónoma de México, Km. 107 Carretera Tijuana-Ensenada, 22860, Ensenada, B.C., México
| | - K Garay-Palmett
- Departamento de Óptica - Centro de Investigación Científica y de Educación Superior de, Ensenada, BC, 22860, México.
| |
Collapse
|
6
|
Sulis W. The Classical-Quantum Dichotomy from the Perspective of the Process Algebra. ENTROPY (BASEL, SWITZERLAND) 2022; 24:184. [PMID: 35205478 PMCID: PMC8870932 DOI: 10.3390/e24020184] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 01/04/2022] [Revised: 01/24/2022] [Accepted: 01/24/2022] [Indexed: 12/04/2022]
Abstract
The classical-quantum dichotomy is analyzed from the perspective of the Process Algebra approach, which views fundamental phenomena through the lens of complex systems theory and Whitehead's process theory. Broadly, the dichotomy can be framed in terms of differences in ontology (phenomena and their behavior) and differences in epistemology (theoretical languages used in their description). The Process Algebra posits a reality, generated by processes, whose fundamental characteristics include becoming, generativity, transience, locality, and contextuality. From this perspective, the classical-quantum dichotomy appears to be a false dichotomy-it arises because of stereotyped, strawman-like depictions of what it means to be classical or quantum. A more careful examination reveals that reality is unitary, that whether a system behaves in a quantum or classical manner depends upon its particularities, in particular, whether it is complex or not, and how information flows govern its dynamics.
Collapse
Affiliation(s)
- William Sulis
- Collective Intelligence Laboratory, McMaster University, Hamilton, ON L8S 2T6, Canada
| |
Collapse
|
7
|
Massar S, Clemmen S. Resource efficient single photon source based on active frequency multiplexing. OPTICS LETTERS 2021; 46:2832-2835. [PMID: 34129552 DOI: 10.1364/ol.428148] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/16/2021] [Accepted: 05/14/2021] [Indexed: 06/12/2023]
Abstract
We propose a new, to the best of our knowledge, single photon source based on the principle of active multiplexing of heralded single photons, which, unlike previously reported architecture, requires a limited amount of physical resources. We discuss both its feasibility and the purity and indistinguishability of single photons as a function of the key parameters of a possible implementation.
Collapse
|
8
|
Wang JQ, Yang YH, Li M, Hu XX, Surya JB, Xu XB, Dong CH, Guo GC, Tang HX, Zou CL. Efficient Frequency Conversion in a Degenerate χ^{(2)} Microresonator. PHYSICAL REVIEW LETTERS 2021; 126:133601. [PMID: 33861096 DOI: 10.1103/physrevlett.126.133601] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/20/2020] [Accepted: 02/25/2021] [Indexed: 06/12/2023]
Abstract
Microresonators on a photonic chip could enhance nonlinear optics effects and thus are promising for realizing scalable high-efficiency frequency conversion devices. However, fulfilling phase matching conditions among multiple wavelengths remains a significant challenge. Here, we present a feasible scheme for degenerate sum-frequency conversion that only requires the two-mode phase matching condition. When the drive and the signal are both near resonance to the same telecom mode, an on-chip photon-number conversion efficiency up to 42% is achieved, showing a broad tuning bandwidth over 250 GHz. Furthermore, cascaded Pockels and Kerr nonlinear optical effects are observed, enabling the parametric amplification of the optical signal to distinct wavelengths in a single device. The scheme demonstrated in this Letter provides an alternative approach to realizing high-efficiency frequency conversion and is promising for future studies on communications, atom clocks, sensing, and imaging.
Collapse
Affiliation(s)
- Jia-Qi Wang
- Key Laboratory of Quantum Information, Chinese Academy of Sciences, University of Science and Technology of China, Hefei 230026, People's Republic of China
- CAS Center For Excellence in Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei, Anhui 230026, People's Republic of China
| | - Yuan-Hao Yang
- Key Laboratory of Quantum Information, Chinese Academy of Sciences, University of Science and Technology of China, Hefei 230026, People's Republic of China
- CAS Center For Excellence in Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei, Anhui 230026, People's Republic of China
| | - Ming Li
- Key Laboratory of Quantum Information, Chinese Academy of Sciences, University of Science and Technology of China, Hefei 230026, People's Republic of China
- CAS Center For Excellence in Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei, Anhui 230026, People's Republic of China
| | - Xin-Xin Hu
- Key Laboratory of Quantum Information, Chinese Academy of Sciences, University of Science and Technology of China, Hefei 230026, People's Republic of China
- CAS Center For Excellence in Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei, Anhui 230026, People's Republic of China
| | - Joshua B Surya
- Department of Electrical Engineering, Yale University, New Haven, Connecticut 06511, USA
| | - Xin-Biao Xu
- Key Laboratory of Quantum Information, Chinese Academy of Sciences, University of Science and Technology of China, Hefei 230026, People's Republic of China
- CAS Center For Excellence in Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei, Anhui 230026, People's Republic of China
| | - Chun-Hua Dong
- Key Laboratory of Quantum Information, Chinese Academy of Sciences, University of Science and Technology of China, Hefei 230026, People's Republic of China
- CAS Center For Excellence in Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei, Anhui 230026, People's Republic of China
| | - Guang-Can Guo
- Key Laboratory of Quantum Information, Chinese Academy of Sciences, University of Science and Technology of China, Hefei 230026, People's Republic of China
- CAS Center For Excellence in Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei, Anhui 230026, People's Republic of China
| | - Hong X Tang
- Department of Electrical Engineering, Yale University, New Haven, Connecticut 06511, USA
| | - Chang-Ling Zou
- Key Laboratory of Quantum Information, Chinese Academy of Sciences, University of Science and Technology of China, Hefei 230026, People's Republic of China
- CAS Center For Excellence in Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei, Anhui 230026, People's Republic of China
| |
Collapse
|
9
|
Cheng CY, Liu ZY, Hu PS, Wang TN, Chien CY, Lin JK, Juo JY, Shiu JS, Yu IA, Chen YC, Chen YF. Efficient frequency conversion based on resonant four-wave mixing. OPTICS LETTERS 2021; 46:681-684. [PMID: 33528440 DOI: 10.1364/ol.414263] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/04/2020] [Accepted: 12/27/2020] [Indexed: 06/12/2023]
Abstract
Efficient frequency conversion of photons has important applications in optical quantum technology because the frequency range suitable for photon manipulation and communication usually varies widely. Recently, an efficient frequency conversion system using a double-Λ four-wave mixing (FWM) process based on electromagnetically induced transparency (EIT) has attracted considerable attention because of its potential to achieve a nearly 100% conversion efficiency (CE). To obtain such a high CE, the spontaneous emission loss in this resonant-type FWM system must be suppressed considerably. A simple solution is to arrange the applied laser fields in a backward configuration. However, the phase mismatch due to this configuration can cause a significant decrease in CE. Here, we demonstrate that the phase mismatch can be effectively compensated by introducing the phase shift obtained by two-photon detuning. Under optimal conditions, we observe a wavelength conversion from 780 to 795 nm with a maximum CE of 91.2%±0.6% by using this backward FWM system at an optical depth of 130 in cold 87Rb atoms. The current work represents an important step toward achieving low-loss, high-fidelity quantum frequency conversion based on EIT.
Collapse
|
10
|
Lu HH, Simmerman EM, Lougovski P, Weiner AM, Lukens JM. Fully Arbitrary Control of Frequency-Bin Qubits. PHYSICAL REVIEW LETTERS 2020; 125:120503. [PMID: 33016737 DOI: 10.1103/physrevlett.125.120503] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/18/2020] [Accepted: 08/14/2020] [Indexed: 06/11/2023]
Abstract
Accurate control of two-level systems is a longstanding problem in quantum mechanics. One such quantum system is the frequency-bin qubit: a single photon existing in superposition of two discrete frequency modes. In this Letter, we demonstrate fully arbitrary control of frequency-bin qubits in a quantum frequency processor for the first time. We numerically establish optimal settings for multiple configurations of electro-optic phase modulators and pulse shapers, experimentally confirming near-unity mode-transformation fidelity for all fundamental rotations. Performance at the single-photon level is validated through the rotation of a single frequency-bin qubit to 41 points spread over the entire Bloch sphere, as well as tracking of the state path followed by the output of a tunable frequency beam splitter, with Bayesian tomography confirming state fidelities F_{ρ}>0.98 for all cases. Such high-fidelity transformations expand the practical potential of frequency encoding in quantum communications, offering exceptional precision and low noise in general qubit manipulation.
Collapse
Affiliation(s)
- Hsuan-Hao Lu
- School of Electrical and Computer Engineering and Purdue Quantum Science and Engineering Institute, Purdue University, West Lafayette, Indiana 47907, USA
| | - Emma M Simmerman
- Quantum Information Science Group, Computational Sciences and Engineering Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
| | - Pavel Lougovski
- Quantum Information Science Group, Computational Sciences and Engineering Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
| | - Andrew M Weiner
- School of Electrical and Computer Engineering and Purdue Quantum Science and Engineering Institute, Purdue University, West Lafayette, Indiana 47907, USA
| | - Joseph M Lukens
- Quantum Information Science Group, Computational Sciences and Engineering Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
| |
Collapse
|
11
|
Cui C, Seshadreesan KP, Guha S, Fan L. High-Dimensional Frequency-Encoded Quantum Information Processing with Passive Photonics and Time-Resolving Detection. PHYSICAL REVIEW LETTERS 2020; 124:190502. [PMID: 32469554 DOI: 10.1103/physrevlett.124.190502] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2019] [Accepted: 04/30/2020] [Indexed: 06/11/2023]
Abstract
In this Letter, we propose a new approach to process high-dimensional quantum information encoded in a photon frequency domain. In contrast to previous approaches based on nonlinear optical processes, no active control of photon energy is required. Arbitrary unitary transformation and projection measurement can be realized with passive photonic circuits and time-resolving detection. A systematic circuit design for a quantum frequency comb with arbitrary size has been given. The criteria to verify quantum frequency correlation has been derived. By considering the practical condition of the detector's finite response time, we show that high-fidelity operation can be readily realized with current device performance. This work will pave the way towards scalable and high-fidelity quantum information processing based on high-dimensional frequency encoding.
Collapse
Affiliation(s)
- Chaohan Cui
- James C. Wyant College of Optical Sciences, The University of Arizona, Tucson, Arizona 85721, USA
| | - Kaushik P Seshadreesan
- James C. Wyant College of Optical Sciences, The University of Arizona, Tucson, Arizona 85721, USA
| | - Saikat Guha
- James C. Wyant College of Optical Sciences, The University of Arizona, Tucson, Arizona 85721, USA
| | - Linran Fan
- James C. Wyant College of Optical Sciences, The University of Arizona, Tucson, Arizona 85721, USA
| |
Collapse
|
12
|
Lake DP, Mitchell M, Sanders BC, Barclay PE. Two-colour interferometry and switching through optomechanical dark mode excitation. Nat Commun 2020; 11:2208. [PMID: 32371992 PMCID: PMC7200651 DOI: 10.1038/s41467-020-15625-x] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2019] [Accepted: 03/12/2020] [Indexed: 11/09/2022] Open
Abstract
Efficient switching and routing of photons of different wavelengths is a requirement for realizing a quantum internet. Multimode optomechanical systems can solve this technological challenge and enable studies of fundamental science involving widely separated wavelengths that are inaccessible to single-mode optomechanical systems. To this end, we demonstrate interference between two optomechanically induced transparency processes in a diamond on-chip cavity. This system allows us to directly observe the dynamics of an optomechanical dark mode that interferes photons at different wavelengths via their mutual coupling to a common mechanical resonance. This dark mode does not transfer energy to the dissipative mechanical reservoir and is predicted to enable quantum information processing applications that are insensitive to mechanical decoherence. Control of the dark mode is also utilized to demonstrate all-optical, two-colour switching and interference with light separated by over 5 THz in frequency.
Collapse
Affiliation(s)
- David P Lake
- Department of Physics and Astronomy and Institute for Quantum Science and Technology, University of Calgary, Calgary, AB, T2N 1N4, Canada
| | - Matthew Mitchell
- Department of Physics and Astronomy and Institute for Quantum Science and Technology, University of Calgary, Calgary, AB, T2N 1N4, Canada
| | - Barry C Sanders
- Department of Physics and Astronomy and Institute for Quantum Science and Technology, University of Calgary, Calgary, AB, T2N 1N4, Canada
| | - Paul E Barclay
- Department of Physics and Astronomy and Institute for Quantum Science and Technology, University of Calgary, Calgary, AB, T2N 1N4, Canada.
| |
Collapse
|
13
|
Ding X, Heberle D, Harrington K, Flemens N, Chang WZ, Birks TA, Moses J. Observation of Rapid Adiabatic Passage in Optical Four-Wave Mixing. PHYSICAL REVIEW LETTERS 2020; 124:153902. [PMID: 32357029 DOI: 10.1103/physrevlett.124.153902] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/28/2019] [Accepted: 03/16/2020] [Indexed: 06/11/2023]
Abstract
We observe clear evidence of adiabatic passage between photon populations via a four-wave mixing process, implemented through a dispersion sweep arranged by a core diameter taper of an optical fiber. Photonic rapid adiabatic passage through the cubic electric susceptibility thus opens precise control of frequency translation between broadband light fields to all common optical media. Areas of potential impact include optical fiber and on-chip waveguide platforms for quantum information, ultrafast spectroscopy and metrology, and extreme light-matter interaction science.
Collapse
Affiliation(s)
- Xiaoyue Ding
- School of Applied and Engineering Physics, Cornell University, Ithaca, New York 14853, USA
| | - Dylan Heberle
- School of Applied and Engineering Physics, Cornell University, Ithaca, New York 14853, USA
| | - Kerrianne Harrington
- Department of Physics, University of Bath, Claverton Down, Bath BA2 7AY, United Kingdom
| | - Noah Flemens
- School of Applied and Engineering Physics, Cornell University, Ithaca, New York 14853, USA
| | - Wei-Zung Chang
- School of Applied and Engineering Physics, Cornell University, Ithaca, New York 14853, USA
| | - Tim A Birks
- Department of Physics, University of Bath, Claverton Down, Bath BA2 7AY, United Kingdom
| | - Jeffrey Moses
- School of Applied and Engineering Physics, Cornell University, Ithaca, New York 14853, USA
| |
Collapse
|
14
|
Joshi C, Farsi A, Dutt A, Kim BY, Ji X, Zhao Y, Bishop AM, Lipson M, Gaeta AL. Frequency-Domain Quantum Interference with Correlated Photons from an Integrated Microresonator. PHYSICAL REVIEW LETTERS 2020; 124:143601. [PMID: 32338976 DOI: 10.1103/physrevlett.124.143601] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/03/2019] [Accepted: 03/11/2020] [Indexed: 06/11/2023]
Abstract
Frequency encoding of quantum information together with fiber and integrated photonic technologies can significantly reduce the complexity and resource requirements for realizing all-photonic quantum networks. The key challenge for such frequency domain processing of single photons is to realize coherent and selective interactions between quantum optical fields of different frequencies over a range of bandwidths. Here, we report frequency-domain Hong-Ou-Mandel interference with spectrally distinct photons generated from a chip-based microresonator. We use four-wave mixing to implement an active "frequency beam splitter" and achieve interference visibilities of 0.95±0.02. Our work establishes four-wave mixing as a tool for selective high-fidelity two-photon operations in the frequency domain which, combined with integrated single-photon sources, provides a building block for frequency-multiplexed photonic quantum networks.
Collapse
Affiliation(s)
- Chaitali Joshi
- Applied Physics and Applied Mathematics, Columbia University, New York, New York 10027, USA
- Applied and Engineering Physics, Cornell University, Ithaca, New York 14850, USA
| | - Alessandro Farsi
- Applied Physics and Applied Mathematics, Columbia University, New York, New York 10027, USA
| | - Avik Dutt
- Ginzton Laboratory and Department of Electrical Engineering, Stanford University, Stanford, California 94305, USA
| | - Bok Young Kim
- Applied Physics and Applied Mathematics, Columbia University, New York, New York 10027, USA
| | - Xingchen Ji
- Department of Electrical Engineering, Columbia University, New York, New York 10027, USA
| | - Yun Zhao
- Department of Electrical Engineering, Columbia University, New York, New York 10027, USA
| | - Andrew M Bishop
- Applied Physics and Applied Mathematics, Columbia University, New York, New York 10027, USA
| | - Michal Lipson
- Applied Physics and Applied Mathematics, Columbia University, New York, New York 10027, USA
- Department of Electrical Engineering, Columbia University, New York, New York 10027, USA
| | - Alexander L Gaeta
- Applied Physics and Applied Mathematics, Columbia University, New York, New York 10027, USA
- Department of Electrical Engineering, Columbia University, New York, New York 10027, USA
| |
Collapse
|
15
|
Quantum Memristors in Frequency-Entangled Optical Fields. MATERIALS 2020; 13:ma13040864. [PMID: 32074986 PMCID: PMC7079656 DOI: 10.3390/ma13040864] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/24/2019] [Revised: 01/17/2020] [Accepted: 02/05/2020] [Indexed: 11/17/2022]
Abstract
A quantum memristor is a passive resistive circuit element with memory, engineered in a given quantum platform. It can be represented by a quantum system coupled to a dissipative environment, in which a system-bath coupling is mediated through a weak measurement scheme and classical feedback on the system. In quantum photonics, such a device can be designed from a beam splitter with tunable reflectivity, which is modified depending on the results of measurements in one of the outgoing beams. Here, we show that a similar implementation can be achieved with frequency-entangled optical fields and a frequency mixer that, working similarly to a beam splitter, produces state superpositions. We show that the characteristic hysteretic behavior of memristors can be reproduced when analyzing the response of the system with respect to the control, for different experimentally attainable states. Since memory effects in memristors can be exploited for classical and neuromorphic computation, the results presented in this work could be a building block for constructing quantum neural networks in quantum photonics, when scaling up.
Collapse
|
16
|
Zhao TM, Chen Y, Yu Y, Li Q, Davanco M, Liu J. Advanced technologies for quantum photonic devices based on epitaxial quantum dots. ADVANCED QUANTUM TECHNOLOGIES 2020; 3:10.1002/qute.201900034. [PMID: 36452403 PMCID: PMC9706462 DOI: 10.1002/qute.201900034] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/20/2019] [Indexed: 05/12/2023]
Abstract
Quantum photonic devices are candidates for realizing practical quantum computers and networks. The development of integrated quantum photonic devices can greatly benefit from the ability to incorporate different types of materials with complementary, superior optical or electrical properties on a single chip. Semiconductor quantum dots (QDs) serve as a core element in the emerging modern photonic quantum technologies by allowing on-demand generation of single-photons and entangled photon pairs. During each excitation cycle, there is one and only one emitted photon or photon pair. QD photonic devices are on the verge of unfolding for advanced quantum technology applications. In this review, we focus on the latest significant progress of QD photonic devices. We first discuss advanced technologies in QD growth, with special attention to droplet epitaxy and site-controlled QDs. Then we overview the wavelength engineering of QDs via strain tuning and quantum frequency conversion techniques. We extend our discussion to advanced optical excitation techniques recently developed for achieving the desired emission properties of QDs. Finally, the advances in heterogeneous integration of active quantum light-emitting devices and passive integrated photonic circuits are reviewed, in the context of realizing scalable quantum information processing chips.
Collapse
Affiliation(s)
- Tian Ming Zhao
- State Key Laboratory of Optoelectronic Materials and Technologies, School of Physics, School of Electronics and Information Technology, Sun Yat-sen University, Guangzhou 510275, China
| | - Yan Chen
- Institute for Integrative Nanosciences, Leibniz IFW Dresden, Helmholtzstrasse 20, 01069 Dresden, Germany
| | - Ying Yu
- State Key Laboratory of Optoelectronic Materials and Technologies, School of Physics, School of Electronics and Information Technology, Sun Yat-sen University, Guangzhou 510275, China
| | - Qing Li
- Department of Electrical and Computer Engineering, Carnegie Mellon University, Pittsburgh, PA 15213, USA
| | - Marcelo Davanco
- Physical Measurement Laboratory, National Institute of Standards and Technology, Gaithersburg, MD 20899, USA
| | - Jin Liu
- State Key Laboratory of Optoelectronic Materials and Technologies, School of Physics, School of Electronics and Information Technology, Sun Yat-sen University, Guangzhou 510275, China
| |
Collapse
|
17
|
Singh A, Li Q, Liu S, Yu Y, Lu X, Schneider C, Höfling S, Lawall J, Verma V, Mirin R, Nam SW, Liu J, Srinivasan K. Quantum Frequency Conversion of a Quantum Dot Single-Photon Source on a Nanophotonic Chip. OPTICA 2019; 6:10.1364/optica.6.000563. [PMID: 38496234 PMCID: PMC10941293 DOI: 10.1364/optica.6.000563] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/16/2019] [Accepted: 03/28/2019] [Indexed: 03/19/2024]
Abstract
Single self-assembled InAs/GaAs quantum dots are promising bright sources of indistinguishable photons for quantum information science. However, their distribution in emission wavelength, due to inhomogeneous broadening inherent to their growth, has limited the ability to create multiple identical sources. Quantum frequency conversion can overcome this issue, particularly if implemented using scalable chip-integrated technologies. Here, we report the first demonstration of quantum frequency conversion of a quantum dot single-photon source on a silicon nanophotonic chip. Single photons from a quantum dot in a micropillar cavity are shifted in wavelength with an on-chip conversion efficiency ≈ 12 %, limited by the linewidth of the quantum dot photons. The intensity autocorrelation function g ( 2 ) ( τ ) for the frequency-converted light is antibunched with g ( 2 ) ( 0 ) = 0.290 ± 0.030 , compared to the before-conversion value g ( 2 ) ( 0 ) = 0.080 ± 0.003 . We demonstrate the suitability of our frequency conversion interface as a resource for quantum dot sources by characterizing its effectiveness across a wide span of input wavelengths (840 nm to 980 nm), and its ability to achieve tunable wavelength shifts difficult to obtain by other approaches.
Collapse
Affiliation(s)
- Anshuman Singh
- National Institute of Standards and Technology, Gaithersburg, MD 20899, USA
- Maryland NanoCenter, University of Maryland, College Park, MD 20742, USA
| | - Qing Li
- National Institute of Standards and Technology, Gaithersburg, MD 20899, USA
- Maryland NanoCenter, University of Maryland, College Park, MD 20742, USA
| | - Shunfa Liu
- State Key Laboratory of Optoelectronic Materials and Technologies, School of Electronics and Information Technology, School of Physics, Sun Yat-sen University, Guangzhou, China
| | - Ying Yu
- State Key Laboratory of Optoelectronic Materials and Technologies, School of Electronics and Information Technology, School of Physics, Sun Yat-sen University, Guangzhou, China
| | - Xiyuan Lu
- National Institute of Standards and Technology, Gaithersburg, MD 20899, USA
- Maryland NanoCenter, University of Maryland, College Park, MD 20742, USA
| | | | - Sven Höfling
- Technische Physik, Universität Würzburg, D-97074 Würzburg, Germany
- SUPA, School of Physics and Astronomy, University of St Andrews, St Andrews, United Kingdom
| | - John Lawall
- National Institute of Standards and Technology, Gaithersburg, MD 20899, USA
| | - Varun Verma
- National Institute of Standards and Technology, Boulder, CO 80305, USA
| | - Richard Mirin
- National Institute of Standards and Technology, Boulder, CO 80305, USA
| | - Sae Woo Nam
- National Institute of Standards and Technology, Boulder, CO 80305, USA
| | - Jin Liu
- State Key Laboratory of Optoelectronic Materials and Technologies, School of Electronics and Information Technology, School of Physics, Sun Yat-sen University, Guangzhou, China
| | - Kartik Srinivasan
- National Institute of Standards and Technology, Gaithersburg, MD 20899, USA
- Joint Quantum Institute, NIST/University of Maryland, University of Maryland, College Park, MD 20742, USA
| |
Collapse
|
18
|
Sośnicki F, Karpiński M. Large-scale spectral bandwidth compression by complex electro-optic temporal phase modulation. OPTICS EXPRESS 2018; 26:31307-31316. [PMID: 30650719 DOI: 10.1364/oe.26.031307] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/22/2018] [Accepted: 09/20/2018] [Indexed: 06/09/2023]
Abstract
Spectral-temporal shaping of quantum light has important applications in quantum communications and photonic quantum information processing. Electro-optic temporal lenses have recently been recognized as a tool for noise-free, efficient spectral bandwidth manipulation of single-photon wavepackets. However, standard electro-optic time lenses based on single-tone modulation exhibit, limited bandwidth modification factors due to material limitations on phase modulation amplitude. Here we numerically investigate the use of complex electro-optic temporal phase modulation patterns for bandwidth compression of light over multiple orders of magnitude and show the feasibility of their use in photonic interfaces for quantum network applications.
Collapse
|
19
|
Reddy DV, Raymer MG. Photonic temporal-mode multiplexing by quantum frequency conversion in a dichroic-finesse cavity. OPTICS EXPRESS 2018; 26:28091-28103. [PMID: 30469865 DOI: 10.1364/oe.26.028091] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/09/2018] [Accepted: 09/25/2018] [Indexed: 06/09/2023]
Abstract
Photonic temporal modes (TMs) form a field-orthogonal basis set representing a continuous-variable degree of freedom that is in principle infinite dimensional, and create a promising resource for quantum information science and technology. The ideal quantum pulse gate (QPG) is a device that multiplexes and demultiplexes temporally orthogonal optical pulses that have the same carrier frequency, spatial mode, and polarization. The QPG is the chief enabling technology for usage of orthogonal temporal modes as a basis for high-dimensional quantum information storage and processing. The greatest hurdle for QPG implementation using nonlinear-optical, parametric processes with time-varying pump or control fields is the limitation on achievable temporal mode selectivity, defined as perfect TM discrimination combined with unity efficiency. We propose the use of pulsed nonlinear frequency conversion in an optical cavity having greatly different finesses for different frequencies to implement a nearly perfectly TM-selective QPG in a low-loss integrated-optics platform.
Collapse
|
20
|
Bahar E, Ding X, Dahan A, Suchowski H, Moses J. Adiabatic four-wave mixing frequency conversion. OPTICS EXPRESS 2018; 26:25582-25601. [PMID: 30469658 DOI: 10.1364/oe.26.025582] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/11/2018] [Accepted: 08/30/2018] [Indexed: 06/09/2023]
Abstract
We introduce the concept of adiabatic four-wave mixing (AFMW) frequency conversion in cubic nonlinear media through an analogy to dynamics in quantum two-level systems. Rapid adiabatic passage in four-wave mixing enables coherent near-100% photon number down-conversion or up-conversion over a bandwidth much larger than ordinary phase-matching bandwidths, overcoming the normal efficiency-bandwidth trade-off. We develop numerical methods to simulate AFWM pulse propagation in silicon photonics and fiber platforms as examples. First, we show that with a longitudinally varying silicon waveguide structure, a bandwidth of 70 nm centered at 1820 nm can be generated with 90% photon number conversion. Second, we predict the broadband generation of nanojoule energy, 4.2-5.2 μm mid-infrared light in a short, linearly tapered fluoride step-index fiber. We expect the AFWM concept to be broadly applicable to cubic nonlinear platforms, for applications as diverse as bright ultrafast light pulse generation, sensing, and conversion between telecommunications bands.
Collapse
|
21
|
Ultrafast Dynamics of High-Harmonic Generation in Terms of Complex Floquet Spectral Analysis. Symmetry (Basel) 2018. [DOI: 10.3390/sym10080313] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
We studied the high-harmonic generation (HHG) of a two-level-system (TLS) driven by an intense monochromatic phase-locked laser based on complex spectral analysis with the Floquet method. In contrast with phenomenological approaches, this analysis deals with the whole process as a coherent quantum process based on microscopic dynamics. We have obtained the time-frequency resolved spectrum of spontaneous HHG single-photon emission from an excited TLS driven by a laser field. Characteristic spectral features of the HHG, such as the plateau and cutoff, are reproduced by the present model. Because the emitted high-harmonic photon is represented as a superposition of different frequencies, the Fano profile appears in the long-time spectrum as a result of the quantum interference of the emitted photon. We reveal that the condition of the quantum interference depends on the initial phase of the driving laser field. We have also clarified that the change in spectral features from the short-time regime to the long-time regime is attributed to the interference between the interference from the Floquet resonance states and the dressed radiation field.
Collapse
|
22
|
Christensen JB, Koefoed JG, Bell BA, McKinstrie CJ, Rottwitt K. Shape-preserving and unidirectional frequency conversion by four-wave mixing. OPTICS EXPRESS 2018; 26:17145-17157. [PMID: 30119530 DOI: 10.1364/oe.26.017145] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/30/2018] [Accepted: 06/05/2018] [Indexed: 06/08/2023]
Abstract
In this work, we investigate the properties of four-wave mixing Bragg scattering driven by orthogonally polarized pumps in a birefringent waveguide. This configuration enables a large signal conversion bandwidth, and allows strongly unidirectional frequency conversion as undesired Bragg-scattering processes are suppressed by waveguide birefringence. Moreover, we show that this form of Bragg scattering preserves the (arbitrary) signal pulse shape, even when driven by pulsed pumps.
Collapse
|
23
|
Polarization insensitive frequency conversion for an atom-photon entanglement distribution via a telecom network. Nat Commun 2018; 9:1997. [PMID: 29784998 PMCID: PMC5962590 DOI: 10.1038/s41467-018-04338-x] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2017] [Accepted: 04/23/2018] [Indexed: 11/09/2022] Open
Abstract
Long-lifetime quantum storages accessible to the telecom photonic infrastructure are essential to long-distance quantum communication. Atomic quantum storages have achieved subsecond storage time corresponding to 1000 km transmission time for a telecom photon through a quantum repeater algorithm. However, the telecom photon cannot be directly interfaced to typical atomic storages. Solid-state quantum frequency conversions fill this wavelength gap. Here we report on the experimental demonstration of a polarization-insensitive solid-state quantum frequency conversion to a telecom photon from a short-wavelength photon entangled with an atomic ensemble. Atom-photon entanglement has been generated with a Rb atomic ensemble and the photon has been translated to telecom range while retaining the entanglement by our nonlinear-crystal-based frequency converter in a Sagnac interferometer.
Collapse
|
24
|
Kuo PS, Pelc JS, Langrock C, Fejer MM. Using temperature to reduce noise in quantum frequency conversion. OPTICS LETTERS 2018; 43:2034-2037. [PMID: 29714739 PMCID: PMC6038917 DOI: 10.1364/ol.43.002034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/14/2018] [Accepted: 03/22/2018] [Indexed: 06/08/2023]
Abstract
Quantum frequency conversion is important in quantum networks to interface nodes operating at different wavelengths and to enable long-distance quantum communication using telecommunications wavelengths. Unfortunately, frequency conversion in actual devices is not a noise-free process. One main source of noise is spontaneous Raman scattering, which can be reduced by lowering the device operating temperature. We explore frequency conversion of 1554 nm photons to 837 nm using a 1813 nm pump in a periodically poled lithium niobate waveguide device. By reducing the temperature from 85°C to 40°C, we show a three-fold reduction in dark count rates, which is in good agreement with theory.
Collapse
Affiliation(s)
- Paulina S. Kuo
- Information Technology Laboratory, National Institute of Standards and Technology, 100 Bureau Drive, Gaithersburg, Maryland 20899, USA
| | - Jason S. Pelc
- E. L. Ginzton Laboratory, Stanford University, 348 Via Pueblo Mall, Stanford, California 94305, USA
| | - Carsten Langrock
- E. L. Ginzton Laboratory, Stanford University, 348 Via Pueblo Mall, Stanford, California 94305, USA
| | - M. M. Fejer
- E. L. Ginzton Laboratory, Stanford University, 348 Via Pueblo Mall, Stanford, California 94305, USA
| |
Collapse
|
25
|
Clemmen S, Farsi A, Ramelow S, Gaeta AL. All-optically tunable buffer for single photons. OPTICS LETTERS 2018; 43:2138-2141. [PMID: 29714765 DOI: 10.1364/ol.43.002138] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2018] [Accepted: 04/02/2018] [Indexed: 06/08/2023]
Abstract
We demonstrate a photon buffer for quantum communication systems via a quantum frequency conversion-dispersion technique based on Bragg scattering four-wave mixing. The all-fiber setup is capable of imparting all-optical and continuously tunable delays onto single photons with minimal photon noise and absorption. Tunable delays up to 23 times the photon duration are demonstrated with on/off efficiencies as high as 55%.
Collapse
|
26
|
Frequency multiplexing for quasi-deterministic heralded single-photon sources. Nat Commun 2018; 9:847. [PMID: 29487312 PMCID: PMC5829139 DOI: 10.1038/s41467-018-03254-4] [Citation(s) in RCA: 69] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2017] [Accepted: 01/31/2018] [Indexed: 11/08/2022] Open
Abstract
Parametric single-photon sources are well suited for large-scale quantum networks due to their potential for photonic integration. Active multiplexing of photons can overcome the intrinsically probabilistic nature of these sources, resulting in near-deterministic operation. However, previous implementations using spatial and temporal multiplexing scale unfavorably due to rapidly increasing switching losses. Here, we break this limitation via frequency multiplexing in which switching losses remain fixed irrespective of the number of multiplexed modes. We use low-noise optical frequency conversion for efficient frequency switching and demonstrate multiplexing of three modes. We achieve a generation rate of 4.6 × 104 photons per second with an ultra-low g(2)(0) = 0.07 indicating high single-photon purity. Our scalable, all-fiber multiplexing system has a total loss of just 1.3 dB, such that the 4.8 dB multiplexing enhancement markedly overcomes switching loss. Our approach offers a promising path to creating a deterministic photon source on an integrated chip-based platform. The aim of multiplexing is to boost capabilities of probabilistic single photon sources, but is vexed by rapidly increasing switching losses. Here, the authors propose and implement an in-fiber frequency-multiplexing scheme where total losses are independent of the number of multiplexed modes.
Collapse
|
27
|
Karnieli A, Arie A. All-Optical Stern-Gerlach Effect. PHYSICAL REVIEW LETTERS 2018; 120:053901. [PMID: 29481201 DOI: 10.1103/physrevlett.120.053901] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/01/2017] [Indexed: 06/08/2023]
Abstract
We introduce a novel formalism in which the paraxial coupled wave equations of the nonlinear optical sum-frequency generation process are shown to be equivalent to the Pauli equation describing the dynamics of a spin-1/2 particle in a spatially varying magnetic field. This interpretation gives rise to a new classical state of paraxial light, described by a mutual beam comprising of two frequencies. As a straightforward application, we propose the existence of an all-optical Stern-Gerlach effect, where an idler beam is deflected by a gradient in the nonlinear coupling, into two mutual beams of the idler and signal waves (equivalent to oppositely oriented spinors), propagating in two discrete directions. The Stern-Gerlach deflection angle and the intensity pattern in the far field are then obtained analytically, in terms of the parameters of the original optical system, laying the grounds for future experimental realizations.
Collapse
Affiliation(s)
- Aviv Karnieli
- Raymond and Beverly Sackler School of Physics and Astronomy, Tel Aviv University, Ramat Aviv 69978, Tel Aviv, Israel
| | - Ady Arie
- School of Electrical Engineering, Iby and Aladar Fleischman Faculty of Engineering, Tel Aviv University, Ramat Aviv 69978, Tel Aviv, Israel
| |
Collapse
|
28
|
Lu HH, Lukens JM, Peters NA, Odele OD, Leaird DE, Weiner AM, Lougovski P. Electro-Optic Frequency Beam Splitters and Tritters for High-Fidelity Photonic Quantum Information Processing. PHYSICAL REVIEW LETTERS 2018; 120:030502. [PMID: 29400520 DOI: 10.1103/physrevlett.120.030502] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/31/2017] [Indexed: 06/07/2023]
Abstract
We report the experimental realization of high-fidelity photonic quantum gates for frequency-encoded qubits and qutrits based on electro-optic modulation and Fourier-transform pulse shaping. Our frequency version of the Hadamard gate offers near-unity fidelity (0.99998±0.00003), requires only a single microwave drive tone for near-ideal performance, functions across the entire C band (1530-1570 nm), and can operate concurrently on multiple qubits spaced as tightly as four frequency modes apart, with no observable degradation in the fidelity. For qutrits, we implement a 3×3 extension of the Hadamard gate: the balanced tritter. This tritter-the first ever demonstrated for frequency modes-attains fidelity 0.9989±0.0004. These gates represent important building blocks toward scalable, high-fidelity quantum information processing based on frequency encoding.
Collapse
Affiliation(s)
- Hsuan-Hao Lu
- School of Electrical and Computer Engineering and Purdue Quantum Center, Purdue University, West Lafayette, Indiana 47907, USA
| | - Joseph M Lukens
- Quantum Information Science Group, Computational Sciences and Engineering Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
| | - Nicholas A Peters
- Quantum Information Science Group, Computational Sciences and Engineering Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
- Bredesen Center for Interdisciplinary Research and Graduate Education, The University of Tennessee, Knoxville, Tennessee 37996, USA
| | - Ogaga D Odele
- School of Electrical and Computer Engineering and Purdue Quantum Center, Purdue University, West Lafayette, Indiana 47907, USA
| | - Daniel E Leaird
- School of Electrical and Computer Engineering and Purdue Quantum Center, Purdue University, West Lafayette, Indiana 47907, USA
| | - Andrew M Weiner
- School of Electrical and Computer Engineering and Purdue Quantum Center, Purdue University, West Lafayette, Indiana 47907, USA
| | - Pavel Lougovski
- Quantum Information Science Group, Computational Sciences and Engineering Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
| |
Collapse
|
29
|
Krutyanskiy V, Meraner M, Schupp J, Lanyon BP. Polarisation-preserving photon frequency conversion from a trapped-ion-compatible wavelength to the telecom C-band. APPLIED PHYSICS. B, LASERS AND OPTICS 2017; 123:228. [PMID: 32009744 PMCID: PMC6961519 DOI: 10.1007/s00340-017-6806-8] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/18/2017] [Accepted: 08/07/2017] [Indexed: 06/10/2023]
Abstract
We demonstrate polarisation-preserving frequency conversion of single-photon-level light at 854 nm, resonant with a trapped-ion transition and qubit, to the 1550-nm telecom C band. A total photon in / fiber-coupled photon out efficiency of ∼ 30% is achieved, for a free-running photon noise rate of ∼ 60 Hz. This performance would enable telecom conversion of 854 nm polarisation qubits, produced in existing trapped-ion systems, with a signal-to-noise ratio greater than 1. In combination with near-future trapped-ion systems, our converter would enable the observation of entanglement between an ion and a photon that has travelled more than 100 km in optical fiber: three orders of magnitude further than the state-of-the-art.
Collapse
Affiliation(s)
- V. Krutyanskiy
- Institut für Quantenoptik und Quanteninformation, Technikerstrasse 21a, 6020 Innsbruck, Austria
| | - M. Meraner
- Institut für Quantenoptik und Quanteninformation, Technikerstrasse 21a, 6020 Innsbruck, Austria
| | - J. Schupp
- Institut für Quantenoptik und Quanteninformation, Technikerstrasse 21a, 6020 Innsbruck, Austria
- Institute for Experimental Physics, University of Innsbruck, 6020 Innsbruck, Austria
| | - B. P. Lanyon
- Institut für Quantenoptik und Quanteninformation, Technikerstrasse 21a, 6020 Innsbruck, Austria
| |
Collapse
|
30
|
Abstract
We propose a new method for frequency conversion of photons which is both versatile and deterministic. We show that a system with two resonators ultrastrongly coupled to a single qubit can be used to realise both single- and multiphoton frequency-conversion processes. The conversion can be exquisitely controlled by tuning the qubit frequency to bring the desired frequency-conversion transitions on or off resonance. Considering recent experimental advances in ultrastrong coupling for circuit QED and other systems, we believe that our scheme can be implemented using available technology.
Collapse
|
31
|
Whiting DJ, Šibalić N, Keaveney J, Adams CS, Hughes IG. Single-Photon Interference due to Motion in an Atomic Collective Excitation. PHYSICAL REVIEW LETTERS 2017; 118:253601. [PMID: 28696754 DOI: 10.1103/physrevlett.118.253601] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/03/2017] [Indexed: 06/07/2023]
Abstract
We experimentally demonstrate the heralded generation of bichromatic single photons from an atomic collective spin excitation (CSE). The photon arrival times display collective quantum beats, a novel interference effect resulting from the relative motion of atoms in the CSE. A combination of velocity-selective excitation with strong laser dressing and the addition of a magnetic field allows for exquisite control of this collective beat phenomenon. The present experiment uses a diamond scheme with near-IR photons that can be extended to include telecommunications wavelengths or modified to allow storage and retrieval in an inverted-Y scheme.
Collapse
Affiliation(s)
- D J Whiting
- Joint Quantum Centre (JQC) Durham-Newcastle, Durham University, Department of Physics, South Road, Durham, DH1 3LE, United Kingdom
| | - N Šibalić
- Joint Quantum Centre (JQC) Durham-Newcastle, Durham University, Department of Physics, South Road, Durham, DH1 3LE, United Kingdom
| | - J Keaveney
- Joint Quantum Centre (JQC) Durham-Newcastle, Durham University, Department of Physics, South Road, Durham, DH1 3LE, United Kingdom
| | - C S Adams
- Joint Quantum Centre (JQC) Durham-Newcastle, Durham University, Department of Physics, South Road, Durham, DH1 3LE, United Kingdom
| | - I G Hughes
- Joint Quantum Centre (JQC) Durham-Newcastle, Durham University, Department of Physics, South Road, Durham, DH1 3LE, United Kingdom
| |
Collapse
|
32
|
Reddy DV, Raymer MG. Engineering temporal-mode-selective frequency conversion in nonlinear optical waveguides: from theory to experiment. OPTICS EXPRESS 2017; 25:12952-12966. [PMID: 28786647 DOI: 10.1364/oe.25.012952] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/29/2017] [Accepted: 05/12/2017] [Indexed: 06/07/2023]
Abstract
Quantum frequency conversion (FC) in nonlinear optical media is a powerful tool for temporal-mode selective manipulation of light. Recent attempts at achieving high mode selectivities and/or fidelities have had to resort to multi-dimensional optimization schemes to determine the system's natural Schmidt modes. Certain combinations of relative-group velocities between the relevant frequency bands, medium length, and temporal pulse widths have been known to achieve good selectivities (exceeding 80%) for temporal modes that are nearly identical to pump pulse shapes, even for high conversion efficiencies. Working in this parameter regime using an off-the-shelf, second-harmonic generation, MgO:PPLN waveguide, and with pulses on the order of 500 fs at wavelengths around 800 nm, we verify experimentally that model-predicted Schmidt modes provide the high temporal-mode selectivity expected. The good agreement between experiment and theory paves the way to the implementation of a proposed two-stage FC scheme that is predicted by the present theory to reach near-perfect (100%) selectivity.
Collapse
|
33
|
Kobayashi T, Yamazaki D, Matsuki K, Ikuta R, Miki S, Yamashita T, Terai H, Yamamoto T, Koashi M, Imoto N. Mach-Zehnder interferometer using frequency-domain beamsplitter. OPTICS EXPRESS 2017; 25:12052-12060. [PMID: 28788758 DOI: 10.1364/oe.25.012052] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
We demonstrate a first-order interference between coherent light at 1580 nm and 795 nm by using a frequency-domain Mach-Zehnder interferometer (MZI). The MZI is implemented by two frequency-domain BSs based on a second-order nonlinear optical effect in a periodically-poled lithium niobate waveguide with a strong pump light. The observed visibility is over 0.99 at 50% conversion efficiencies of the BSs. Toward photonic quantum information processing, sufficiently small background photon rate is necessary. From measurement results with a superconducting single photon detector (SSPD), we discuss the feasibility of the frequency-domain MZI in a quantum regime. Our estimation shows that the single photon interference with the visibility above 0.9 is feasible with practical settings.
Collapse
|
34
|
Bell BA, Xiong C, Marpaung D, McKinstrie CJ, Eggleton BJ. Uni-directional wavelength conversion in silicon using four-wave mixing driven by cross-polarized pumps. OPTICS LETTERS 2017; 42:1668-1671. [PMID: 28454131 DOI: 10.1364/ol.42.001668] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
We demonstrate optical frequency conversion between telecom wavelengths using four-wave mixing Bragg scattering powered by two pump pulses polarized on orthogonal axes of a silicon waveguide. This allows conversion in a single frequency direction while, with co-polarized pumps, the signal is redshifted or blueshifted with similar efficiency. Our approach exploits the birefringence of the waveguide and its effect on the phase matching of the four-wave mixing process. The blue or red direction can be selected by the input polarization of the signal, and 20 dB extinction ratios are observed with the unintended direction. This technique will allow efficient and controlled conversion between specified wavelength channels in integrated photonic devices.
Collapse
|
35
|
Photons in two colours at once. Nature 2016; 540:173. [DOI: 10.1038/540173d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
36
|
|