K. A. Balygin, A. N. Klimov, S. P. Kulik, S. N. Molotkov, “Active stabilization of the optical part in fiber optic quantum cryptography”, Pis'ma v Zh. Èksper. Teoret. Fiz., 2016, Volume 103, Issue 6,Pages <nobr>469

This article is cited in 4 papers

QUANTUM INFORMATION SCIENCE

Active stabilization of the optical part in fiber optic quantum cryptography

K. A. Balygin^a, A. N. Klimov^ba, S. P. Kulik^a, S. N. Molotkov^cde

^a Faculty of Physics, Moscow State University
^b Prokhorov General Physics Institute, Russian Academy of Sciences
^c Lomonosov Moscow State University, Faculty of Computational Mathematics and Cybernetics
^d Institute of Solid State Physics, Russian Academy of Sciences
^e Academy of Cryptography of the Russian Federation

Abstract: The method of active stabilization of the polarization and other parameters of the optical part of a two-pass fiber optic quantum cryptography has been proposed and implemented. The method allows the completely automated maintenance of the visibility of interference close to an ideal value ($V\geqslant0.99$) and the reduction of the instrumental contribution to the error in primary keys (QBER) to $0.5\%$.

Received: 08.02.2016

DOI: 10.7868/S0370274X16060114