Zero-error attacks and detection statistics in the coherent one-way protocol for quantum cryptography

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Title		Zero-error attacks and detection statistics in the coherent one-way protocol for quantum cryptography
Authors		Branciard, Cyril Gisin, Nicolas Lütkenhaus, Norbert Scarani, Valerio
Published in		Quantum Information and Computation. 2007, vol. 7, no. 7, p. 639-664
Abstract		This is a study of the security of the Coherent One-Way (COW) protocol for quantum cryptography, proposed recently as a simple and fast experimental scheme. In the zero-error regime, the eavesdropper Eve can only take advantage of the losses in the transmission. We consider new attacks, based on unambiguous state discrimination, which perform better than the basic beam-splitting attack, but which can be detected by a careful analysis of the detection statistics. These results stress the importance of testing several statistical parameters in order to achieve higher rates of secret bits.
Keywords		Quantum Cryptography — Quantum Key Distribution — Eavesdropping
Full text		Article (Published version) (401 Kb) - Limited access to UNIGE Other version: http://www.rintonpress.com/xqic7/qic-7-7/639-664.pdf
Structures		Faculté des sciences / Section de physique / Groupe de physique appliquée
Citation (ISO format)		BRANCIARD, Cyril et al. Zero-error attacks and detection statistics in the coherent one-way protocol for quantum cryptography. In: Quantum Information and Computation, 2007, vol. 7, n° 7, p. 639-664. https://archive-ouverte.unige.ch/unige:36696