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

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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.

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Authors and Affiliations

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

    D. A. Kronberg & S. N. Molotkov

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

    S. N. Molotkov

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

    S. N. Molotkov

Authors
  1. D. A. Kronberg
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  2. S. N. Molotkov
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Correspondence to D. A. Kronberg.

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Original Russian Text © D.A. Kronberg, S.N. Molotkov, 2014, published in Pis’ma v Zhurnal Eksperimental’noi i Teoreticheskoi Fiziki, 2014, Vol. 100, No. 4, pp. 305–311.

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Kronberg, D.A., Molotkov, S.N. Duality of quantum communication channels and a collective intercept-resend attack on quantum key distribution with differential phase shift. Jetp Lett. 100, 279–284 (2014). https://doi.org/10.1134/S0021364014160097

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  • DOI: https://doi.org/10.1134/S0021364014160097

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