Wavelength Assignment in Hybrid Quantum-Classical Networks

Abstract Optimal wavelength assignment in dense-wavelength-division-multiplexing (DWDM) systems that integrate both quantum and classical channels is studied. In such systems, weak quantum key distribution (QKD) signals travel alongside intense classical signals on the same fiber, where the former c...

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Autores principales:	Sima Bahrani, Mohsen Razavi, Jawad A. Salehi
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2018
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/5fbab912d3f34e569008b463d892afe5
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spelling	oai:doaj.org-article:5fbab912d3f34e569008b463d892afe52021-12-02T16:08:16ZWavelength Assignment in Hybrid Quantum-Classical Networks10.1038/s41598-018-21418-62045-2322https://doaj.org/article/5fbab912d3f34e569008b463d892afe52018-02-01T00:00:00Zhttps://doi.org/10.1038/s41598-018-21418-6https://doaj.org/toc/2045-2322Abstract Optimal wavelength assignment in dense-wavelength-division-multiplexing (DWDM) systems that integrate both quantum and classical channels is studied. In such systems, weak quantum key distribution (QKD) signals travel alongside intense classical signals on the same fiber, where the former can be masked by the background noise induced by the latter. Here, we investigate how optimal wavelength assignment can mitigate this problem. We consider different DWDM structures and various sources of crosstalk and propose several near-optimal wavelength assignment methods that maximize the total secret key rate of the QKD channels. Our numerical results show that the optimum wavelength assignment pattern is commonly consisted of several interspersed quantum and classical bands. Using our proposed techniques, the total secret key rate of quantum channels can substantially be improved, as compared to conventional assignment methods, in the noise dominated regimes. Alternatively, we can maximize the number of QKD users supported under certain key rate constraints.Sima BahraniMohsen RazaviJawad A. SalehiNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 8, Iss 1, Pp 1-13 (2018)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Sima Bahrani Mohsen Razavi Jawad A. Salehi Wavelength Assignment in Hybrid Quantum-Classical Networks
description	Abstract Optimal wavelength assignment in dense-wavelength-division-multiplexing (DWDM) systems that integrate both quantum and classical channels is studied. In such systems, weak quantum key distribution (QKD) signals travel alongside intense classical signals on the same fiber, where the former can be masked by the background noise induced by the latter. Here, we investigate how optimal wavelength assignment can mitigate this problem. We consider different DWDM structures and various sources of crosstalk and propose several near-optimal wavelength assignment methods that maximize the total secret key rate of the QKD channels. Our numerical results show that the optimum wavelength assignment pattern is commonly consisted of several interspersed quantum and classical bands. Using our proposed techniques, the total secret key rate of quantum channels can substantially be improved, as compared to conventional assignment methods, in the noise dominated regimes. Alternatively, we can maximize the number of QKD users supported under certain key rate constraints.
format	article
author	Sima Bahrani Mohsen Razavi Jawad A. Salehi
author_facet	Sima Bahrani Mohsen Razavi Jawad A. Salehi
author_sort	Sima Bahrani
title	Wavelength Assignment in Hybrid Quantum-Classical Networks
title_short	Wavelength Assignment in Hybrid Quantum-Classical Networks
title_full	Wavelength Assignment in Hybrid Quantum-Classical Networks
title_fullStr	Wavelength Assignment in Hybrid Quantum-Classical Networks
title_full_unstemmed	Wavelength Assignment in Hybrid Quantum-Classical Networks
title_sort	wavelength assignment in hybrid quantum-classical networks
publisher	Nature Portfolio
publishDate	2018
url	https://doaj.org/article/5fbab912d3f34e569008b463d892afe5
work_keys_str_mv	AT simabahrani wavelengthassignmentinhybridquantumclassicalnetworks AT mohsenrazavi wavelengthassignmentinhybridquantumclassicalnetworks AT jawadasalehi wavelengthassignmentinhybridquantumclassicalnetworks
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Wavelength Assignment in Hybrid Quantum-Classical Networks

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