S. N. Molotkov, “What is a quantum cryptography protocol that ensures the maximum distance in the case of a strictly single-photon source?”, Pis'ma v Zh. Èksper. Teoret. Fiz., 2015, Volume 102, Issue 7,Pages <nobr>530

This article is cited in 5 papers

QUANTUM INFORMATION SCIENCE

What is a quantum cryptography protocol that ensures the maximum distance in the case of a strictly single-photon source?

S. N. Molotkov^abc

^a Academy of Cryptography of the Russian Federation, Moscow, 121552, Russia
^b Faculty of Computational Mathematics and Cybernetics, Moscow State University, Moscow, 119991, Russia
^c Institute of Solid State Physics, Russian Academy of Sciences, Chernogolovka, Moscow region, 142432, Russia

Abstract: The distance of secret key distribution in the case of a strictly single-photon source has been analyzed for the BB84 protocol and phase time coding (the PTC protocol) protocols. It has been shown that the distance of secret key distribution ensured by the PTC protocol is almost 100 km longer than that by the BB84 protocol (the other parameters of the system being the same).

Received: 28.07.2015
Revised: 17.08.2015

DOI: 10.7868/S0370274X15190145