Pulsed Sagnac source of polarization-entangled photon pairs in telecommunication band

We report a source of polarization-entangled photon pairs in the 1550-nm telecommunication band, which is based on non-collinear spontaneous parametric down-conversion in a periodically poled lithium niobate crystal pumped by picosecond pulses. This source is realized utilizing a polarization-based...

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Detalles Bibliográficos
Autores principales: Kim, Heonoh, Kwon, Osung, Moon, Han Seb
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2019
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6430775/
https://www.ncbi.nlm.nih.gov/pubmed/30903029
http://dx.doi.org/10.1038/s41598-019-41633-z
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author Kim, Heonoh
Kwon, Osung
Moon, Han Seb
author_facet Kim, Heonoh
Kwon, Osung
Moon, Han Seb
author_sort Kim, Heonoh
collection PubMed
description We report a source of polarization-entangled photon pairs in the 1550-nm telecommunication band, which is based on non-collinear spontaneous parametric down-conversion in a periodically poled lithium niobate crystal pumped by picosecond pulses. This source is realized utilizing a polarization-based Sagnac interferometer employing a type-0 non-collinear quasi-phase-matching configuration. Polarization entanglement is verified through measurement of the polarization-correlation interference fringes with visibility >96% and by testing the experimental violation of the Clauser-Horne-Shimony-Holt (CHSH) form of Bell’s inequality. The CHSH-Bell parameter S is found to be 2.72 ± 0.04, with 18 standard deviations from the statistical uncertainty.
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spelling pubmed-64307752019-03-29 Pulsed Sagnac source of polarization-entangled photon pairs in telecommunication band Kim, Heonoh Kwon, Osung Moon, Han Seb Sci Rep Article We report a source of polarization-entangled photon pairs in the 1550-nm telecommunication band, which is based on non-collinear spontaneous parametric down-conversion in a periodically poled lithium niobate crystal pumped by picosecond pulses. This source is realized utilizing a polarization-based Sagnac interferometer employing a type-0 non-collinear quasi-phase-matching configuration. Polarization entanglement is verified through measurement of the polarization-correlation interference fringes with visibility >96% and by testing the experimental violation of the Clauser-Horne-Shimony-Holt (CHSH) form of Bell’s inequality. The CHSH-Bell parameter S is found to be 2.72 ± 0.04, with 18 standard deviations from the statistical uncertainty. Nature Publishing Group UK 2019-03-22 /pmc/articles/PMC6430775/ /pubmed/30903029 http://dx.doi.org/10.1038/s41598-019-41633-z Text en © The Author(s) 2019 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
Kim, Heonoh
Kwon, Osung
Moon, Han Seb
Pulsed Sagnac source of polarization-entangled photon pairs in telecommunication band
title Pulsed Sagnac source of polarization-entangled photon pairs in telecommunication band
title_full Pulsed Sagnac source of polarization-entangled photon pairs in telecommunication band
title_fullStr Pulsed Sagnac source of polarization-entangled photon pairs in telecommunication band
title_full_unstemmed Pulsed Sagnac source of polarization-entangled photon pairs in telecommunication band
title_short Pulsed Sagnac source of polarization-entangled photon pairs in telecommunication band
title_sort pulsed sagnac source of polarization-entangled photon pairs in telecommunication band
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6430775/
https://www.ncbi.nlm.nih.gov/pubmed/30903029
http://dx.doi.org/10.1038/s41598-019-41633-z
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