Experimental demonstration of confidential communication with quantum security monitoring

Abstract Security issues and attack management of optical communication have come increasingly important. Quantum techniques are explored to secure or protect classical communication. In this paper, we present a method for in-service optical physical layer security monitoring that has vacuum-noise l...

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Autores principales:	Yupeng Gong, Adrian Wonfor, Jeffrey H. Hunt, Ian H. White, Richard V. Penty
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/3e31007da9e54dd7b0211636104869b2
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spelling	oai:doaj.org-article:3e31007da9e54dd7b0211636104869b22021-11-08T10:51:09ZExperimental demonstration of confidential communication with quantum security monitoring10.1038/s41598-021-01013-y2045-2322https://doaj.org/article/3e31007da9e54dd7b0211636104869b22021-11-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-01013-yhttps://doaj.org/toc/2045-2322Abstract Security issues and attack management of optical communication have come increasingly important. Quantum techniques are explored to secure or protect classical communication. In this paper, we present a method for in-service optical physical layer security monitoring that has vacuum-noise level sensitivity without classical security loopholes. This quantum-based method of eavesdropping detection, similar to that used in conventional pilot tone systems, is achieved by sending quantum signals, here comprised of continuous variable quantum states, i.e. weak coherent states modulated at the quantum level. An experimental demonstration of attack detection using the technique was presented for an ideal fibre tapping attack that taps 1% of the ongoing light in a 10 dB channel, and also an ideal correlated jamming attack in the same channel that maintains the light power with excess noise increased by 0.5 shot noise unit. The quantum monitoring system monitors suspicious changes in the quantum signal with the help of advanced data processing algorithms. In addition, unlike the CV-QKD system which is very sensitive to channel excess noise and receiver system noise, the quantum monitoring is potentially more compatible with current optical infrastructure, as it lowers the system requirements and potentially allows much higher classical data rate communication with links length up to 100 s km.Yupeng GongAdrian WonforJeffrey H. HuntIan H. WhiteRichard V. PentyNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-16 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Yupeng Gong Adrian Wonfor Jeffrey H. Hunt Ian H. White Richard V. Penty Experimental demonstration of confidential communication with quantum security monitoring
description	Abstract Security issues and attack management of optical communication have come increasingly important. Quantum techniques are explored to secure or protect classical communication. In this paper, we present a method for in-service optical physical layer security monitoring that has vacuum-noise level sensitivity without classical security loopholes. This quantum-based method of eavesdropping detection, similar to that used in conventional pilot tone systems, is achieved by sending quantum signals, here comprised of continuous variable quantum states, i.e. weak coherent states modulated at the quantum level. An experimental demonstration of attack detection using the technique was presented for an ideal fibre tapping attack that taps 1% of the ongoing light in a 10 dB channel, and also an ideal correlated jamming attack in the same channel that maintains the light power with excess noise increased by 0.5 shot noise unit. The quantum monitoring system monitors suspicious changes in the quantum signal with the help of advanced data processing algorithms. In addition, unlike the CV-QKD system which is very sensitive to channel excess noise and receiver system noise, the quantum monitoring is potentially more compatible with current optical infrastructure, as it lowers the system requirements and potentially allows much higher classical data rate communication with links length up to 100 s km.
format	article
author	Yupeng Gong Adrian Wonfor Jeffrey H. Hunt Ian H. White Richard V. Penty
author_facet	Yupeng Gong Adrian Wonfor Jeffrey H. Hunt Ian H. White Richard V. Penty
author_sort	Yupeng Gong
title	Experimental demonstration of confidential communication with quantum security monitoring
title_short	Experimental demonstration of confidential communication with quantum security monitoring
title_full	Experimental demonstration of confidential communication with quantum security monitoring
title_fullStr	Experimental demonstration of confidential communication with quantum security monitoring
title_full_unstemmed	Experimental demonstration of confidential communication with quantum security monitoring
title_sort	experimental demonstration of confidential communication with quantum security monitoring
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/3e31007da9e54dd7b0211636104869b2
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Experimental demonstration of confidential communication with quantum security monitoring

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