Phase-matching quantum key distribution with advantage distillation

Rui-Qiang Wang; Chun-Mei Zhang; Zhen-Qiang Yin; Hong-Wei Li; Shuang Wang; Wei Chen; Guang-Can Guo; Zheng-Fu Han

doi:10.1088/1367-2630/ac8115

New Journal of Physics (Jan 2022)

Phase-matching quantum key distribution with advantage distillation

Rui-Qiang Wang,
Chun-Mei Zhang,
Zhen-Qiang Yin,
Hong-Wei Li,
Shuang Wang,
Wei Chen,
Guang-Can Guo,
Zheng-Fu Han

Affiliations

Rui-Qiang Wang: ORCiD; CAS Key Laboratory of Quantum Information, University of Science and Technology of China , Hefei 230026, People’s Republic of China; Synergetic Innovation Center of Quantum Information and Quantum Physics, University of Science and Technology of China , Hefei, Anhui 230026, People’s Republic of China; State Key Laboratory of Cryptology , PO Box 5159, Beijing 100878, People’s Republic of China
Chun-Mei Zhang: ORCiD; Institute of Quantum Information and Technology, Nanjing University of Posts and Telecommunications , Nanjing, 210003, People’s Republic of China
Zhen-Qiang Yin: ORCiD; CAS Key Laboratory of Quantum Information, University of Science and Technology of China , Hefei 230026, People’s Republic of China; Synergetic Innovation Center of Quantum Information and Quantum Physics, University of Science and Technology of China , Hefei, Anhui 230026, People’s Republic of China; State Key Laboratory of Cryptology , PO Box 5159, Beijing 100878, People’s Republic of China
Hong-Wei Li: Henan Key Laboratory of Quantum Information and Cryptography , SSF IEU, Zhengzhou 450000, People’s Republic of China
Shuang Wang: CAS Key Laboratory of Quantum Information, University of Science and Technology of China , Hefei 230026, People’s Republic of China; Synergetic Innovation Center of Quantum Information and Quantum Physics, University of Science and Technology of China , Hefei, Anhui 230026, People’s Republic of China; State Key Laboratory of Cryptology , PO Box 5159, Beijing 100878, People’s Republic of China
Wei Chen: CAS Key Laboratory of Quantum Information, University of Science and Technology of China , Hefei 230026, People’s Republic of China; Synergetic Innovation Center of Quantum Information and Quantum Physics, University of Science and Technology of China , Hefei, Anhui 230026, People’s Republic of China; State Key Laboratory of Cryptology , PO Box 5159, Beijing 100878, People’s Republic of China
Guang-Can Guo: CAS Key Laboratory of Quantum Information, University of Science and Technology of China , Hefei 230026, People’s Republic of China; Synergetic Innovation Center of Quantum Information and Quantum Physics, University of Science and Technology of China , Hefei, Anhui 230026, People’s Republic of China; State Key Laboratory of Cryptology , PO Box 5159, Beijing 100878, People’s Republic of China
Zheng-Fu Han: CAS Key Laboratory of Quantum Information, University of Science and Technology of China , Hefei 230026, People’s Republic of China; Synergetic Innovation Center of Quantum Information and Quantum Physics, University of Science and Technology of China , Hefei, Anhui 230026, People’s Republic of China; State Key Laboratory of Cryptology , PO Box 5159, Beijing 100878, People’s Republic of China

DOI: https://doi.org/10.1088/1367-2630/ac8115
Journal volume & issue: Vol. 24, no. 7
p. 073049

Abstract

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Phase-matching quantum key distribution (PM-QKD) provides a promising solution to surpass the fundamental rate–distance bound without quantum repeaters. In this paper, we insert an additional advantage distillation (AD) step after quantum communication to improve the performance of PM-QKD. Simulation results show that, by splitting the raw key into blocks of only a few bits so as to identify highly correlated bit pairs, the AD method can tolerate high system misalignment errors and improve the secret key rate and transmission distance significantly, which is very promising in current PM-QKD systems.

Published in New Journal of Physics

ISSN: 1367-2630 (Online)
Publisher: IOP Publishing
Country of publisher: United Kingdom
LCC subjects: Science: Physics
Website: https://iopscience.iop.org/journal/1367-2630

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