首页|Security analysis of satellite-to-ground reference-frame-independent quantum key distribution with beam wandering

Security analysis of satellite-to-ground reference-frame-independent quantum key distribution with beam wandering

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The reference-frame-independent(RFI)quantum key distribution(QKD)is suitable for satellite-based links by re-moving the active alignment on the reference frames.However,how the beam wandering influences the performance of RFI-QKD remains a pending issue in satellite-to-ground links.In this paper,based on the mathematical model for charac-terizing beam wandering,we present the security analysis for satellite-to-ground RFI-QKD and analytically derive formulas for calculating the secret key rate with beam wandering.Our simulation results show that the performance of RFI-QKD is better than the Bennett-Brassard 1984(BB84)QKD with beam wandering in asymptotic case.Furthermore,the degree of influences of beam wandering is specifically presented for satellite-to-ground RFI-QKD when statistical fluctuations are taken into account.Our work can provide theoretical support for the realization of RFI-QKD using satellite-to-ground links and have implications for the construction of large-scale satellite-based quantum networks.

quantum key distributionsatellite-to-groundbeam wandering

周淳、赵燕美、杨晓亮、陆宜飞、周雨、姜晓磊、汪海涛、汪洋、李家骥、江木生、汪翔、张海龙、李宏伟、鲍皖苏

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Henan Key Laboratory of Quantum Information and Cryptography,SSFIEU,Zhengzhou 450001,China

Synergetic Innovation Centre of Quantum Information and Quantum Physics,University of Science and Technology of China,Hefei 230026,China

National Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Key Research and Development Program of ChinaChina Postdoctoral Science FoundationNatural Science Foundation of Henan Province,ChinaNatural Science Foundation of Henan Province,ChinaFund of the Anhui Initiative in Quantum Information Technologies

615052616210159761605248616752352020YFA03097022021M691536202300410534202300410532

2024

10.1088/1674-1056/ad51f6

中国物理B(英文版)
中国物理学会和中国科学院物理研究所

中国物理B(英文版)

CSTPCDEI
影响因子：0.995
ISSN：1674-1056
年,卷(期)：2024.33(8)