Investigation of Long-Term Stability of Single-Photon Quantum Key Distribution in a Polarization Coding Scheme
https://doi.org/10.25205/2541-9447-2021-16-2-81-93
Abstract
Experimental results demonstrating long-term stability of the operation of our atmospheric quantum cryptography setup using the BB84 protocol and polarization coding are presented. It was shown that the “sifted” quantum key distribution rate and the quantum bit error rate in the key remained constant for 1 hour and were equal to 10 kbit/s and 6.5 %, respectively, at a distance between the transmitter and the receiver equal to 20 cm. Theoretical dependences of the secret quantum key generation rate on a quantum channel transmission coefficient for single-photon detectors, which were used in this experiment, and for new detectors with a reduced level of dark pulses are given.
Supporting agencies: This work was supported by A. V. Rzhanov Institute of Semiconductor Physics SB RAS and Novosibirsk State University.
About the Authors
A. V. Kolyako
A. V. Rzhanov Institute of Semiconductor Physics of the Siberian Branch of the Russian Academy of Sciences; Novosibirsk State University
Russian Federation
Russian Federation
Alexander V. Kolyako, Engineer
WoS Researcher ID AAD-8523-2021
Scopus Author ID 56369246900
Novosibirsk
A. S. Pleshkov
A. V. Rzhanov Institute of Semiconductor Physics of the Siberian Branch of the Russian Academy of Sciences; Novosibirsk State University; Siberian State University of Telecommunications and Information Science
Russian Federation
Russian Federation
Alexander S. Pleshkov, Junior Research Fellow
WoS Researcher ID ABG-6199-2020
Scopus Author ID 56401232600
Novosibirsk
D. B. Tretyakov
A. V. Rzhanov Institute of Semiconductor Physics of the Siberian Branch of the Russian Academy of Sciences; Novosibirsk State University
Russian Federation
Russian Federation
Denis B. Tretyakov, Candidate of Science (Physics and Mathematics)
WoS Researcher ID AAD-9791-2021
Scopus Author ID 6507147052
Novosibirsk
V. M. Entin
A. V. Rzhanov Institute of Semiconductor Physics of the Siberian Branch of the Russian Academy of Sciences; Novosibirsk State University
Russian Federation
Russian Federation
Vasiliy M. Entin, Candidate of Science (Physics and Mathematics)
Novosibirsk
I. I. Ryabtsev
A. V. Rzhanov Institute of Semiconductor Physics of the Siberian Branch of the Russian Academy of Sciences; Novosibirsk State University; Novosibirsk State Technical University
Russian Federation
Russian Federation
Igor I. Ryabtsev, Doctor of Science (Physics and Mathematics), Corresponding Member of RAS
Scopus Author ID 7004241094
Novosibirsk
I. G. Neizvestny
A. V. Rzhanov Institute of Semiconductor Physics of the Siberian Branch of the Russian Academy of Sciences
Russian Federation
Russian Federation
Igor G. Neizvestny, Doctor of Science (Physics and Mathematics), Corresponding Member of RAS
Novosibirsk
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Review
For citations:
Kolyako A.V., Pleshkov A.S., Tretyakov D.B., Entin V.M., Ryabtsev I.I., Neizvestny I.G. Investigation of Long-Term Stability of Single-Photon Quantum Key Distribution in a Polarization Coding Scheme. SIBERIAN JOURNAL OF PHYSICS. 2021;16(2):81-93. (In Russ.) https://doi.org/10.25205/2541-9447-2021-16-2-81-93
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