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The Study of Synchronization in Quantum Key Distribution System

Part of the Communications in Computer and Information Science book series (CCIS,volume 1396)


The paper considers the main methods of synchronization in quantum cryptography systems. A generalized structure of a quantum key distribution system with phase coding of photon states is described. The results of experimental studies of the synchronization process in a two-pass quantum communication system are presented and the features of optical pulse detection are shown. Analytical expressions are given for calculating the error of detecting the length of a quantum channel during synchronization. The estimation of the security of the synchronization process using a multiphoton pulse is given. An optical signal detection algorithm that reduces the probability of an attack on the quantum key distribution system during synchronization is proposed.


  • Quantum key distribution
  • Synchronization
  • Photon impulse
  • The algorithm
  • Unauthorized access

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  • DOI: 10.1007/978-981-16-1483-5_7
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The study was supported by Institute of Computer Technology and Information Safety, Southern Federal University and International Pljonkins Corporation.

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Correspondence to Anton Pljonkin .

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Pljonkin, A., Singh, P.K., Joshi, S., Sabantina, L. (2021). The Study of Synchronization in Quantum Key Distribution System. In: Singh, P.K., Veselov, G., Pljonkin, A., Kumar, Y., Paprzycki, M., Zachinyaev, Y. (eds) Futuristic Trends in Network and Communication Technologies. FTNCT 2020. Communications in Computer and Information Science, vol 1396. Springer, Singapore.

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