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Phase coherent states for enhancing the performance of continuous variable quantum key distribution

Becir, A and Wahiddin, Mohamed Ridza (2012) Phase coherent states for enhancing the performance of continuous variable quantum key distribution. Journal of the Physical Society of Japan , 81. pp. 1-9. ISSN 0031-9015

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Abstract

In this paper, we present three continuous variable quantum key distribution protocols (named two-, four-, and eightstate protocols) based on the discrete modulation of phase coherent states. We investigate the security of these protocols against the collective eavesdropping attacks and show their performance in a realistic setup by taking into consideration the realistic lossy noisy quantum channels, and the imperfection of detection. We show that the use of phase coherent states gives better performance in terms of noise tolerance, key rate, and achievable distance than that of common linear coherent states.

Item Type: Article (Journal)
Additional Information: 3760/28169
Uncontrolled Keywords: nonlinear coherent state, quantum key distribution, continuous variable, discrete modulation, mutual information, holevo bound
Subjects: Q Science > QC Physics
Kulliyyahs/Centres/Divisions/Institutes: Kulliyyah of Information and Communication Technology > Department of Computer Science
Kulliyyah of Information and Communication Technology > Department of Computer Science
Depositing User: Mrs. Masita Mohamed Taib
Date Deposited: 17 Jan 2013 05:38
Last Modified: 13 Feb 2013 18:06
URI: http://irep.iium.edu.my/id/eprint/28169

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