Investigation of underwater quantum channels in a 30 meter flume tank using structured photons

Par Conseil national de recherches du Canada

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DOI	Trouver le DOI : https://doi.org/10.1088/1367-2630/abb688
Auteur	Rechercher : Hufnagel, Felix¹; Rechercher : Sit, Alicia¹; Rechercher : Bouchard, Frédéric¹; Rechercher : Zhang, Yingwen¹; Rechercher : England, Duncan¹; Rechercher : Heshami, Khabat¹Identifiant ORCID : https://orcid.org/0000-0003-3864-1930; Rechercher : Sussman, Benjamin J.¹; Rechercher : Karimi, Ebrahim¹Identifiant ORCID : https://orcid.org/0000-0002-8168-7304
Affiliation	Conseil national de recherches du Canada. Technologies de sécurité et de rupture
Format	Texte, Article
Sujet	quantum communication; underwater communication link; vector vortex modes
Résumé	Underwater quantum communication has recently been explored using polarization and orbital angular momentum (OAM). Here, we show that spatially structured modes, e.g., a coherent superposition of beams carrying both polarization and OAM, can also be used for underwater quantum cryptography. We also use the polarization degree of freedom to investigate the impact of the channel length on key rates for quantum communication applications. The underwater channel proves to be a difficult environment for establishing quantum communication as underwater optical turbulence results in significant beam wandering and distortions. However, the errors associated to the turbulence do not result in error rates above the threshold for establishing a positive key in a quantum communication link with both the polarization and spatially structured photons. The impact of the underwater channel on the spatially structured modes is also investigated at different distances using polarization tomography.
Date de publication	2020-09-23
Maison d’édition	IOP Publishing Ltd Institute of Physics Deutsche Physikalische Gesellschaft
Licence	Creative Commons Attribution 4.0 International (CC BY 4.0) https://creativecommons.org/licenses/by/4.0/deed.fr
Dans	New Journal of Physics 22, nº 9, 093074 (23 septembre 2020).
Langue	anglais
Publications évaluées par des pairs	Oui
Exporter la notice	Exporter en format RIS
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Identificateur de l’enregistrement	84f59a6a-5f0e-4797-ae82-5fb5402ad3fb
Enregistrement créé	2021-05-04
Enregistrement modifié	2024-01-31

Date de modification :: 2024-07-16