Flexible entanglement-distribution network with an AlGaAs chip for secure communications

Abstract Quantum communication networks enable applications ranging from highly secure communication to clock synchronization and distributed quantum computing. Miniaturized, flexible, and cost-efficient resources will be key elements for ensuring the scalability of such networks as they progress to...

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Autores principales:	Félicien Appas, Florent Baboux, Maria I. Amanti, Aristide Lemaítre, Fabien Boitier, Eleni Diamanti, Sara Ducci
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/362d76a9bd3643bc929fc60b18f8af4f
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spelling	oai:doaj.org-article:362d76a9bd3643bc929fc60b18f8af4f2021-12-02T17:55:12ZFlexible entanglement-distribution network with an AlGaAs chip for secure communications10.1038/s41534-021-00454-72056-6387https://doaj.org/article/362d76a9bd3643bc929fc60b18f8af4f2021-07-01T00:00:00Zhttps://doi.org/10.1038/s41534-021-00454-7https://doaj.org/toc/2056-6387Abstract Quantum communication networks enable applications ranging from highly secure communication to clock synchronization and distributed quantum computing. Miniaturized, flexible, and cost-efficient resources will be key elements for ensuring the scalability of such networks as they progress towards large-scale deployed infrastructures. Here, we bring these elements together by combining an on-chip, telecom-wavelength, broadband entangled photon source with industry-grade flexible-grid wavelength division multiplexing techniques, to demonstrate reconfigurable entanglement distribution between up to 8 users in a resource-optimized quantum network topology. As a benchmark application we use quantum key distribution, and show low error and high secret key generation rates across several frequency channels, over both symmetric and asymmetric metropolitan-distance optical fibered links and including finite-size effects. By adapting the bandwidth allocation to specific network constraints, we also illustrate the flexible networking capability of our configuration. Together with the potential of our semiconductor source for distributing secret keys over a 60 nm bandwidth with commercial multiplexing technology, these results offer a promising route to the deployment of scalable quantum network architectures.Félicien AppasFlorent BabouxMaria I. AmantiAristide LemaítreFabien BoitierEleni DiamantiSara DucciNature PortfolioarticlePhysicsQC1-999Electronic computers. Computer scienceQA75.5-76.95ENnpj Quantum Information, Vol 7, Iss 1, Pp 1-10 (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 Félicien Appas Florent Baboux Maria I. Amanti Aristide Lemaítre Fabien Boitier Eleni Diamanti Sara Ducci Flexible entanglement-distribution network with an AlGaAs chip for secure communications
description	Abstract Quantum communication networks enable applications ranging from highly secure communication to clock synchronization and distributed quantum computing. Miniaturized, flexible, and cost-efficient resources will be key elements for ensuring the scalability of such networks as they progress towards large-scale deployed infrastructures. Here, we bring these elements together by combining an on-chip, telecom-wavelength, broadband entangled photon source with industry-grade flexible-grid wavelength division multiplexing techniques, to demonstrate reconfigurable entanglement distribution between up to 8 users in a resource-optimized quantum network topology. As a benchmark application we use quantum key distribution, and show low error and high secret key generation rates across several frequency channels, over both symmetric and asymmetric metropolitan-distance optical fibered links and including finite-size effects. By adapting the bandwidth allocation to specific network constraints, we also illustrate the flexible networking capability of our configuration. Together with the potential of our semiconductor source for distributing secret keys over a 60 nm bandwidth with commercial multiplexing technology, these results offer a promising route to the deployment of scalable quantum network architectures.
format	article
author	Félicien Appas Florent Baboux Maria I. Amanti Aristide Lemaítre Fabien Boitier Eleni Diamanti Sara Ducci
author_facet	Félicien Appas Florent Baboux Maria I. Amanti Aristide Lemaítre Fabien Boitier Eleni Diamanti Sara Ducci
author_sort	Félicien Appas
title	Flexible entanglement-distribution network with an AlGaAs chip for secure communications
title_short	Flexible entanglement-distribution network with an AlGaAs chip for secure communications
title_full	Flexible entanglement-distribution network with an AlGaAs chip for secure communications
title_fullStr	Flexible entanglement-distribution network with an AlGaAs chip for secure communications
title_full_unstemmed	Flexible entanglement-distribution network with an AlGaAs chip for secure communications
title_sort	flexible entanglement-distribution network with an algaas chip for secure communications
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/362d76a9bd3643bc929fc60b18f8af4f
work_keys_str_mv	AT felicienappas flexibleentanglementdistributionnetworkwithanalgaaschipforsecurecommunications AT florentbaboux flexibleentanglementdistributionnetworkwithanalgaaschipforsecurecommunications AT mariaiamanti flexibleentanglementdistributionnetworkwithanalgaaschipforsecurecommunications AT aristidelemaitre flexibleentanglementdistributionnetworkwithanalgaaschipforsecurecommunications AT fabienboitier flexibleentanglementdistributionnetworkwithanalgaaschipforsecurecommunications AT elenidiamanti flexibleentanglementdistributionnetworkwithanalgaaschipforsecurecommunications AT saraducci flexibleentanglementdistributionnetworkwithanalgaaschipforsecurecommunications
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Flexible entanglement-distribution network with an AlGaAs chip for secure communications

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