High fidelity heralded single-photon source using cavity quantum electrodynamics

Demands for single-photon sources are ubiquitous in quantum information processing as well as in quantum metrology. In many protocols for producing single photons, a cavity-emitter configuration is used. In such cavity quantum electrodynamical systems, the cavity can enforce a well-defined output mo...

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Autores principales: Zhang, Xin, Xu, Chang, Ren, Zhongzhou
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2018
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5816608/
https://www.ncbi.nlm.nih.gov/pubmed/29453365
http://dx.doi.org/10.1038/s41598-018-21481-z
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author Zhang, Xin
Xu, Chang
Ren, Zhongzhou
author_facet Zhang, Xin
Xu, Chang
Ren, Zhongzhou
author_sort Zhang, Xin
collection PubMed
description Demands for single-photon sources are ubiquitous in quantum information processing as well as in quantum metrology. In many protocols for producing single photons, a cavity-emitter configuration is used. In such cavity quantum electrodynamical systems, the cavity can enforce a well-defined output mode for the photon and enhance its collection efficiency, while the emitter is indispensable for single photon emission. Here we show the two cavity-one two-level emitter configuration can be used to produce exclusively photon pairs, with each photon in a separate mode. Conditioning on detecting a photon in one of the modes, one heralds with high fidelity a single photon in the other mode. Counterintuitively, upon decreasing the coupling of the emitter to one of the modes, the heralding fidelity can further increase.
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spelling pubmed-58166082018-02-21 High fidelity heralded single-photon source using cavity quantum electrodynamics Zhang, Xin Xu, Chang Ren, Zhongzhou Sci Rep Article Demands for single-photon sources are ubiquitous in quantum information processing as well as in quantum metrology. In many protocols for producing single photons, a cavity-emitter configuration is used. In such cavity quantum electrodynamical systems, the cavity can enforce a well-defined output mode for the photon and enhance its collection efficiency, while the emitter is indispensable for single photon emission. Here we show the two cavity-one two-level emitter configuration can be used to produce exclusively photon pairs, with each photon in a separate mode. Conditioning on detecting a photon in one of the modes, one heralds with high fidelity a single photon in the other mode. Counterintuitively, upon decreasing the coupling of the emitter to one of the modes, the heralding fidelity can further increase. Nature Publishing Group UK 2018-02-16 /pmc/articles/PMC5816608/ /pubmed/29453365 http://dx.doi.org/10.1038/s41598-018-21481-z Text en © The Author(s) 2018 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Article
Zhang, Xin
Xu, Chang
Ren, Zhongzhou
High fidelity heralded single-photon source using cavity quantum electrodynamics
title High fidelity heralded single-photon source using cavity quantum electrodynamics
title_full High fidelity heralded single-photon source using cavity quantum electrodynamics
title_fullStr High fidelity heralded single-photon source using cavity quantum electrodynamics
title_full_unstemmed High fidelity heralded single-photon source using cavity quantum electrodynamics
title_short High fidelity heralded single-photon source using cavity quantum electrodynamics
title_sort high fidelity heralded single-photon source using cavity quantum electrodynamics
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5816608/
https://www.ncbi.nlm.nih.gov/pubmed/29453365
http://dx.doi.org/10.1038/s41598-018-21481-z
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