S. N. Molotkov, “On a collective attack on the key in quantum cryptography on two nonorthogonal states”, Pis'ma v Zh. Èksper. Teoret. Fiz., 2004, Volume 80, Issue 8,Pages <nobr>639

This article is cited in 2 papers

QUANTUM INFORMATION SCIENCE

On a collective attack on the key in quantum cryptography on two nonorthogonal states

S. N. Molotkov^ab

^a M. V. Lomonosov Moscow State University, Faculty of Computational Mathematics and Cybernetics
^b Institute of Solid State Physics, Russian Academy of Sciences

Abstract: A “collective” attack on the key is considered, and its connection with the classical capacity of a quantum communication channel is analyzed. It has been shown that the allowable error probability for legitimate users to which the secure key can be extracted is less than half the value for “translucent” eavesdropping and individual measurements.

PACS: 03.67.Dt, 42.50.-p, 89.70.+c

Received: 21.09.2004