This article is cited in 1 paper

QUANTUM INFORMATION SCIENCE

Quantum key distribution in a single-photon regime with nonorthogonal basis states

D. A. Kronberg^a, S. N. Molotkov<sup>abc

a</sup> Institute of Solid State Physics, Russian Academy of Sciences
^b Academy of Criptography of Russia
^c M. V. Lomonosov Moscow State University, Faculty of Computational Mathematics and Cybernetics

Abstract: A quantum key distribution protocol with nonorthogonal basis states is a generalization of the known BB84 key distribution protocol. The critical error and length of a secure key have been determined for the protocol with nonorthogonal basis states for an arbitrary angle between information states. An explicit optimal attack on the distributed key has been constructed; this attack maximizes eavesdropper information at a given error on the receiver side.

PACS: 03.65.Hk, 03.67.Dd

Received: 11.11.2008
Revised: 02.03.2009

 English version: Journal of Experimental and Theoretical Physics Letters, 2009, 89:7, 370–376

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