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Active stabilization of the optical part in fiber optic quantum cryptography

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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 ≥ 0.99) and the reduction of the instrumental contribution to the error in primary keys (QBER) to 0.5%.

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Authors and Affiliations

  1. Faculty of Physics, Moscow State University, Moscow, 119991, Russia

    K. A. Balygin, A. N. Klimov & S. P. Kulik

  2. Prokhorov General Physics Institute, Russian Academy of Sciences, ul. Vavilova 38, Moscow, 119991, Russia

    A. N. Klimov

  3. Institute of Solid State Physics, Russian Academy of Sciences, Chernogolovka, Moscow region, 142432, Russia

    S. N. Molotkov

  4. Academy of Cryptography of the Russian Federation, Moscow, 121552, Russia

    S. N. Molotkov

  5. Faculty of Computational Mathematics and Cybernetics, Moscow State University, Moscow, 119991, Russia

    S. N. Molotkov

Authors
  1. K. A. Balygin
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  2. A. N. Klimov
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  3. S. P. Kulik
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  4. S. N. Molotkov
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Corresponding author

Correspondence to S. N. Molotkov.

Additional information

Original Russian Text © K.A. Balygin, A.N. Klimov, S.P. Kulik, S.N. Molotkov, 2016, published in Pis’ma v Zhurnal Eksperimental’noi i Teoreticheskoi Fiziki, 2016, Vol. 103, No. 6, pp. 469–474.

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Balygin, K.A., Klimov, A.N., Kulik, S.P. et al. Active stabilization of the optical part in fiber optic quantum cryptography. Jetp Lett. 103, 420–424 (2016). https://doi.org/10.1134/S0021364016060023

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  • DOI: https://doi.org/10.1134/S0021364016060023

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