Investigation of Long-Term Stability of Single-Photon Quantum Key Distribution in a Polarization Coding Scheme-Reference-Cited by-同舟云学术

Investigation of Long-Term Stability of Single-Photon Quantum Key Distribution in a Polarization Coding Scheme

Published:2022-01-12 Issue:2 Volume:16 Page:81-93
ISSN:2541-9447
Container-title:SIBERIAN JOURNAL OF PHYSICS
language:
Short-container-title:jour

Author:

Kolyako A. V.¹^ORCID,Pleshkov A. S.²^ORCID,Tretyakov D. B.¹^ORCID,Entin V. M.¹^ORCID,Ryabtsev I. I.³^ORCID,Neizvestny I. G.⁴

Affiliation:

1. A. V. Rzhanov Institute of Semiconductor Physics of the Siberian Branch of the Russian Academy of Sciences; Novosibirsk State University

2. 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

3. A. V. Rzhanov Institute of Semiconductor Physics of the Siberian Branch of the Russian Academy of Sciences; Novosibirsk State University; Novosibirsk State Technical University

4. A. V. Rzhanov Institute of Semiconductor Physics of the Siberian Branch of the Russian Academy of Sciences

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.

Publisher

Novosibirsk State University (NSU)

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