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Reducing the Level of Stray Exposure of an Optical Fiber in a Single-Pass Quantum Cryptography System

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Moscow University Physics Bulletin Aims and scope

Abstract

A method for triggering a laser synchro-signal diode in a single-pass quantum cryptographic system is proposed. The method allows reducing the level of stray influence in an optical fiber from scattered laser radiation by \({\sim}\)2 orders of magnitude and increasing the length of a single-fiber communication line when generating a secret key to 95 km.

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Authors and Affiliations

  1. Center for Quantum Technologies, Department of Physics,Moscow State University, 119991, Moscow, Russia

    K. A. Balygin, V. I. Zaitsev, A. I. Klimov, A. N. Klimov, S. P. Kulik & S. N. Molotkov

Authors
  1. K. A. Balygin
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  2. V. I. Zaitsev
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  3. A. I. Klimov
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  4. A. N. Klimov
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  5. S. P. Kulik
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  6. S. N. Molotkov
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Corresponding author

Correspondence to K. A. Balygin.

Additional information

Translated by V. Alekseev

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Balygin, K.A., Zaitsev, V.I., Klimov, A.I. et al. Reducing the Level of Stray Exposure of an Optical Fiber in a Single-Pass Quantum Cryptography System. Moscow Univ. Phys. 75, 175–180 (2020). https://doi.org/10.3103/S0027134920020034

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  • DOI: https://doi.org/10.3103/S0027134920020034

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