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Frequency multiplexing for quasi-deterministic heralded single-photon sources

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 impleme...

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Autores principales: Joshi, Chaitali, Farsi, Alessandro, Clemmen, Stéphane, Ramelow, Sven, Gaeta, Alexander L.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5829139/
https://www.ncbi.nlm.nih.gov/pubmed/29487312
http://dx.doi.org/10.1038/s41467-018-03254-4
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author Joshi, Chaitali
Farsi, Alessandro
Clemmen, Stéphane
Ramelow, Sven
Gaeta, Alexander L.
author_facet Joshi, Chaitali
Farsi, Alessandro
Clemmen, Stéphane
Ramelow, Sven
Gaeta, Alexander L.
author_sort Joshi, Chaitali
collection PubMed
description 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 × 10(4) 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.
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spelling pubmed-58291392018-03-02 Frequency multiplexing for quasi-deterministic heralded single-photon sources Joshi, Chaitali Farsi, Alessandro Clemmen, Stéphane Ramelow, Sven Gaeta, Alexander L. Nat Commun Article 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 × 10(4) 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. Nature Publishing Group UK 2018-02-27 /pmc/articles/PMC5829139/ /pubmed/29487312 http://dx.doi.org/10.1038/s41467-018-03254-4 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
Joshi, Chaitali
Farsi, Alessandro
Clemmen, Stéphane
Ramelow, Sven
Gaeta, Alexander L.
Frequency multiplexing for quasi-deterministic heralded single-photon sources
title Frequency multiplexing for quasi-deterministic heralded single-photon sources
title_full Frequency multiplexing for quasi-deterministic heralded single-photon sources
title_fullStr Frequency multiplexing for quasi-deterministic heralded single-photon sources
title_full_unstemmed Frequency multiplexing for quasi-deterministic heralded single-photon sources
title_short Frequency multiplexing for quasi-deterministic heralded single-photon sources
title_sort frequency multiplexing for quasi-deterministic heralded single-photon sources
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5829139/
https://www.ncbi.nlm.nih.gov/pubmed/29487312
http://dx.doi.org/10.1038/s41467-018-03254-4
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