D. A. Kronberg, S. N. Molotkov, “Duality of quantum communication channels and a collective intercept-resend attack on quantum key distribution with differential phase shift”, Pis'ma v Zh. Èksper. Teoret. Fiz., 2014, Volume 100, Issue 4,Pages <nobr>305

This article is cited in 3 papers

QUANTUM INFORMATION SCIENCE

Duality of quantum communication channels and a collective intercept-resend attack on quantum key distribution with differential phase shift

D. A. Kronberg^a, S. N. Molotkov^abc

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

Abstract: Quantum key distribution with differential phase shift is the least studied. A collective intercept-resend attack has been considered. Analysis of even this simplest attack is not simple. It has been shown that collective measurements with entangled states do not increase information of an eavesdropper as compared to individual measurements. This result is a consequence of the fundamental properties of quantum communication channels, which are attributed to the duality of quantum ensembles and measurements.

Received: 11.07.2014

DOI: 10.7868/S0370274X14160127