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Yard P, Jones AE, Paesani S, Maïnos A, Bulmer JFF, Laing A. On-Chip Quantum Information Processing with Distinguishable Photons. PHYSICAL REVIEW LETTERS 2024; 132:150602. [PMID: 38682995 DOI: 10.1103/physrevlett.132.150602] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/18/2022] [Accepted: 11/07/2023] [Indexed: 05/01/2024]
Abstract
Multiphoton interference is at the heart of photonic quantum technologies. Arrays of integrated cavities can support bright sources of single photons with high purity and small footprint, but the inevitable spectral distinguishability between photons generated from nonidentical cavities is an obstacle to scaling. In principle, this problem can be alleviated by measuring photons with high timing resolution, which erases spectral information through the time-energy uncertainty relation. Here, we experimentally demonstrate that detection can be implemented with a temporal resolution sufficient to interfere photons detuned on the scales necessary for cavity-based integrated photon sources. By increasing the effective timing resolution of the system from 200 to 20 ps, we observe a 20% increase in the visibility of quantum interference between independent photons from integrated microring resonator sources that are detuned by 6.8 GHz. We go on to show how time-resolved detection of nonideal photons can be used to improve the fidelity of an entangling operation and to mitigate the reduction of computational complexity in boson sampling experiments. These results pave the way for photonic quantum information processing with many photon sources without the need for active alignment.
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Affiliation(s)
- Patrick Yard
- Quantum Engineering and Technology Laboratories, School of Physics and Department of Electrical and Electronic Engineering, University of Bristol, Bristol, United Kingdom
| | - Alex E Jones
- Quantum Engineering and Technology Laboratories, School of Physics and Department of Electrical and Electronic Engineering, University of Bristol, Bristol, United Kingdom
| | - Stefano Paesani
- Quantum Engineering and Technology Laboratories, School of Physics and Department of Electrical and Electronic Engineering, University of Bristol, Bristol, United Kingdom
- Center for Hybrid Quantum Networks (Hy-Q), Niels Bohr Institute, University of Copenhagen, Blegdamsvej 17, DK-2100 Copenhagen, Denmark
| | - Alexandre Maïnos
- Quantum Engineering and Technology Laboratories, School of Physics and Department of Electrical and Electronic Engineering, University of Bristol, Bristol, United Kingdom
| | - Jacob F F Bulmer
- Quantum Engineering and Technology Laboratories, School of Physics and Department of Electrical and Electronic Engineering, University of Bristol, Bristol, United Kingdom
| | - Anthony Laing
- Quantum Engineering and Technology Laboratories, School of Physics and Department of Electrical and Electronic Engineering, University of Bristol, Bristol, United Kingdom
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Wang X, Wang J, Ren Z, Wen R, Zou CL, Siviloglou GA, Chen JF. Quantum Interference between Photons and Single Quanta of Stored Atomic Coherence. PHYSICAL REVIEW LETTERS 2022; 128:083605. [PMID: 35275680 DOI: 10.1103/physrevlett.128.083605] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/25/2021] [Accepted: 02/07/2022] [Indexed: 06/14/2023]
Abstract
Essential for building quantum networks over remote independent nodes, the indistinguishability of photons has been extensively studied by observing the coincidence dip in the Hong-Ou-Mandel interferometer. However, indistinguishability is not limited to the same type of bosons. For the first time, we hereby observe quantum interference between flying photons and a single quantum of stored atomic coherence (magnon) in an atom-light beam splitter interface. We demonstrate that the Hermiticity of this interface determines the type of quantum interference between photons and magnons. Consequently, not only the bunching behavior that characterizes bosons is observed, but counterintuitively, fermionlike antibunching as well. The hybrid nature of the demonstrated magnon-photon quantum interface can be applied to versatile quantum memory platforms, and can lead to fundamentally different photon distributions from those occurring in boson sampling.
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Affiliation(s)
- Xingchang Wang
- Shenzhen Institute for Quantum Science and Engineering and Department of Physics, Southern University of Science and Technology, Shenzhen 518055, China
- International Quantum Academy (SIQA), and Shenzhen Branch, Hefei National Laboratory, Futian District, Shenzhen 518055, China
| | - Jianmin Wang
- Shenzhen Institute for Quantum Science and Engineering and Department of Physics, Southern University of Science and Technology, Shenzhen 518055, China
- International Quantum Academy (SIQA), and Shenzhen Branch, Hefei National Laboratory, Futian District, Shenzhen 518055, China
| | - Zhiqiang Ren
- State Key Laboratory of Precision Spectroscopy, School of Physics and Electronic Science, East China Normal University, Shanghai 200241, China
| | - Rong Wen
- Key Laboratory of Advanced Transducers and Intelligent Control System of Ministry of Education, College of Physics and Optoelectronics, Taiyuan University of Technology, Taiyuan 030024, Shanxi, China
| | - Chang-Ling Zou
- CAS Key Laboratory of Quantum Information, University of Science and Technology of China, Hefei 230026, Anhui, China
| | - Georgios A Siviloglou
- Shenzhen Institute for Quantum Science and Engineering and Department of Physics, Southern University of Science and Technology, Shenzhen 518055, China
- International Quantum Academy (SIQA), and Shenzhen Branch, Hefei National Laboratory, Futian District, Shenzhen 518055, China
| | - J F Chen
- Shenzhen Institute for Quantum Science and Engineering and Department of Physics, Southern University of Science and Technology, Shenzhen 518055, China
- Guangdong Provincial Key Laboratory of Quantum Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, China
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Lo Faro MJ, Ruello G, Leonardi AA, Morganti D, Irrera A, Priolo F, Gigan S, Volpe G, Fazio B. Visualization of Directional Beaming of Weakly Localized Raman from a Random Network of Silicon Nanowires. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2021; 8:2100139. [PMID: 34306975 PMCID: PMC8292918 DOI: 10.1002/advs.202100139] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/13/2021] [Revised: 03/22/2021] [Indexed: 06/13/2023]
Abstract
Disordered optical media are an emerging class of materials that can strongly scatter light. These materials are useful to investigate light transport phenomena and for applications in imaging, sensing and energy storage. While coherent light can be generated using such materials, its directional emission is typically hampered by their strong scattering nature. Here, the authors directly image Rayleigh scattering, photoluminescence and weakly localized Raman light from a random network of silicon nanowires via real-space microscopy and Fourier imaging. Direct imaging enables us to gain insight on the light transport mechanisms in the random material, to visualize its weak localization length and to demonstrate out-of-plane beaming of the scattered coherent Raman light. The direct visualization of coherent light beaming in such random networks of silicon nanowires offers novel opportunities for fundamental studies of light propagation in disordered media. It also opens venues for the development of next generation optical devices based on disordered structures, such as sensors, light sources, and optical switches.
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Affiliation(s)
- Maria J. Lo Faro
- Dipartimento di Fisica e AstronomiaUniversità di Cataniavia S. Sofia 64Catania95123Italy
- CNR‐IMMIstituto per la Microelettronica e Microsistemivia Santa Sofia 64Catania95123Italy
- CNR‐IPCFviale F. Stagno d'Alcontres 37, Faro SuperioreMessina98158Italy
| | - Giovanna Ruello
- CNR‐IPCFviale F. Stagno d'Alcontres 37, Faro SuperioreMessina98158Italy
| | - Antonio A. Leonardi
- Dipartimento di Fisica e AstronomiaUniversità di Cataniavia S. Sofia 64Catania95123Italy
- CNR‐IMMIstituto per la Microelettronica e Microsistemivia Santa Sofia 64Catania95123Italy
- CNR‐IPCFviale F. Stagno d'Alcontres 37, Faro SuperioreMessina98158Italy
| | - Dario Morganti
- Dipartimento di Fisica e AstronomiaUniversità di Cataniavia S. Sofia 64Catania95123Italy
- CNR‐IPCFviale F. Stagno d'Alcontres 37, Faro SuperioreMessina98158Italy
| | - Alessia Irrera
- CNR‐IPCFviale F. Stagno d'Alcontres 37, Faro SuperioreMessina98158Italy
| | - Francesco Priolo
- Dipartimento di Fisica e AstronomiaUniversità di Cataniavia S. Sofia 64Catania95123Italy
| | - Sylvain Gigan
- Laboratoire Kastler BrosselENS‐Université PSLCNRSSorbonne UniversitéCollège de France24 rue LhomondParis75005France
| | - Giorgio Volpe
- CNR‐IPCFviale F. Stagno d'Alcontres 37, Faro SuperioreMessina98158Italy
- Department of ChemistryUniversity College London20 Gordon StreetLondonWC1H 0AJUK
| | - Barbara Fazio
- CNR‐IPCFviale F. Stagno d'Alcontres 37, Faro SuperioreMessina98158Italy
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