Path-encoded high-dimensional quantum communication over a 2-km multicore fiber

Abstract Quantum key distribution (QKD) protocols based on high-dimensional quantum states have shown the route to increase the key rate generation while benefiting of enhanced error tolerance, thus overcoming the limitations of two-dimensional QKD protocols. Nonetheless, the reliable transmission t...

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Autores principales:	Beatrice Da Lio, Daniele Cozzolino, Nicola Biagi, Yunhong Ding, Karsten Rottwitt, Alessandro Zavatta, Davide Bacco, Leif K. Oxenløwe
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Physics QC1-999 Electronic computers. Computer science QA75.5-76.95
Acceso en línea:	https://doaj.org/article/3d9c68aa568241beb6cf0c03bd59b4f2
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id	oai:doaj.org-article:3d9c68aa568241beb6cf0c03bd59b4f2
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spelling	oai:doaj.org-article:3d9c68aa568241beb6cf0c03bd59b4f22021-12-02T17:33:03ZPath-encoded high-dimensional quantum communication over a 2-km multicore fiber10.1038/s41534-021-00398-y2056-6387https://doaj.org/article/3d9c68aa568241beb6cf0c03bd59b4f22021-04-01T00:00:00Zhttps://doi.org/10.1038/s41534-021-00398-yhttps://doaj.org/toc/2056-6387Abstract Quantum key distribution (QKD) protocols based on high-dimensional quantum states have shown the route to increase the key rate generation while benefiting of enhanced error tolerance, thus overcoming the limitations of two-dimensional QKD protocols. Nonetheless, the reliable transmission through fiber links of high-dimensional quantum states remains an open challenge that must be addressed to boost their application. Here, we demonstrate the reliable transmission over a 2-km-long multicore fiber of path-encoded high-dimensional quantum states. Leveraging on a phase-locked loop system, a stable interferometric detection is guaranteed, allowing for low error rates and the generation of 6.3 Mbit/s of a secret key rate.Beatrice Da LioDaniele CozzolinoNicola BiagiYunhong DingKarsten RottwittAlessandro ZavattaDavide BaccoLeif K. OxenløweNature PortfolioarticlePhysicsQC1-999Electronic computers. Computer scienceQA75.5-76.95ENnpj Quantum Information, Vol 7, Iss 1, Pp 1-6 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Physics QC1-999 Electronic computers. Computer science QA75.5-76.95
spellingShingle	Physics QC1-999 Electronic computers. Computer science QA75.5-76.95 Beatrice Da Lio Daniele Cozzolino Nicola Biagi Yunhong Ding Karsten Rottwitt Alessandro Zavatta Davide Bacco Leif K. Oxenløwe Path-encoded high-dimensional quantum communication over a 2-km multicore fiber
description	Abstract Quantum key distribution (QKD) protocols based on high-dimensional quantum states have shown the route to increase the key rate generation while benefiting of enhanced error tolerance, thus overcoming the limitations of two-dimensional QKD protocols. Nonetheless, the reliable transmission through fiber links of high-dimensional quantum states remains an open challenge that must be addressed to boost their application. Here, we demonstrate the reliable transmission over a 2-km-long multicore fiber of path-encoded high-dimensional quantum states. Leveraging on a phase-locked loop system, a stable interferometric detection is guaranteed, allowing for low error rates and the generation of 6.3 Mbit/s of a secret key rate.
format	article
author	Beatrice Da Lio Daniele Cozzolino Nicola Biagi Yunhong Ding Karsten Rottwitt Alessandro Zavatta Davide Bacco Leif K. Oxenløwe
author_facet	Beatrice Da Lio Daniele Cozzolino Nicola Biagi Yunhong Ding Karsten Rottwitt Alessandro Zavatta Davide Bacco Leif K. Oxenløwe
author_sort	Beatrice Da Lio
title	Path-encoded high-dimensional quantum communication over a 2-km multicore fiber
title_short	Path-encoded high-dimensional quantum communication over a 2-km multicore fiber
title_full	Path-encoded high-dimensional quantum communication over a 2-km multicore fiber
title_fullStr	Path-encoded high-dimensional quantum communication over a 2-km multicore fiber
title_full_unstemmed	Path-encoded high-dimensional quantum communication over a 2-km multicore fiber
title_sort	path-encoded high-dimensional quantum communication over a 2-km multicore fiber
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/3d9c68aa568241beb6cf0c03bd59b4f2
work_keys_str_mv	AT beatricedalio pathencodedhighdimensionalquantumcommunicationovera2kmmulticorefiber AT danielecozzolino pathencodedhighdimensionalquantumcommunicationovera2kmmulticorefiber AT nicolabiagi pathencodedhighdimensionalquantumcommunicationovera2kmmulticorefiber AT yunhongding pathencodedhighdimensionalquantumcommunicationovera2kmmulticorefiber AT karstenrottwitt pathencodedhighdimensionalquantumcommunicationovera2kmmulticorefiber AT alessandrozavatta pathencodedhighdimensionalquantumcommunicationovera2kmmulticorefiber AT davidebacco pathencodedhighdimensionalquantumcommunicationovera2kmmulticorefiber AT leifkoxenløwe pathencodedhighdimensionalquantumcommunicationovera2kmmulticorefiber
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Path-encoded high-dimensional quantum communication over a 2-km multicore fiber

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