Reference-frame-independent quantum key distribution with two-way classical communication

doi:10.1088/1674-1056/ad6a3d

中国物理B ›› 2024, Vol. 33 ›› Issue (10): 100302-100302.doi: 10.1088/1674-1056/ad6a3d

Reference-frame-independent quantum key distribution with two-way classical communication

Chun Zhou(周淳), Hai-Tao Wang(汪海涛)†, Yi-Fei Lu(陆宜飞), Xiao-Lei Jiang(姜晓磊), Yan-Mei Zhao(赵燕美), Yu Zhou(周雨), Yang Wang(汪洋), Jia-Ji Li(李家骥), Yan-Yang Zhou(周砚扬), Xiang Wang(汪翔)‡, Hong-Wei Li(李宏伟), and Wan-Su Bao(鲍皖苏)

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

收稿日期:2024-05-22 修回日期:2024-07-19 接受日期:2024-08-02 出版日期:2024-10-15 发布日期:2024-10-15
通讯作者: Hai-Tao Wang, Xiang Wang E-mail:wht@qiclab.cn;dixonwx@163.com
基金资助:
The project was supported by the National Natural Science Foundation of China (Grant Nos. 61505261, 62101597, 61605248, and 61675235), the National Key Research and Development Program of China (Grant No. 2020YFA0309702), the China Postdoctoral Science Foundation (Grant No. 2021M691536), the Natural Science Foundation of Henan Province (Grant Nos. 202300410534 and 202300410532), and the Anhui Initiative in Quantum Information Technologies.

Reference-frame-independent quantum key distribution with two-way classical communication

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

Received:2024-05-22 Revised:2024-07-19 Accepted:2024-08-02 Online:2024-10-15 Published:2024-10-15
Contact: Hai-Tao Wang, Xiang Wang E-mail:wht@qiclab.cn;dixonwx@163.com
Supported by:
The project was supported by the National Natural Science Foundation of China (Grant Nos. 61505261, 62101597, 61605248, and 61675235), the National Key Research and Development Program of China (Grant No. 2020YFA0309702), the China Postdoctoral Science Foundation (Grant No. 2021M691536), the Natural Science Foundation of Henan Province (Grant Nos. 202300410534 and 202300410532), and the Anhui Initiative in Quantum Information Technologies.

摘要/Abstract

摘要： The data post-processing scheme based on two-way classical communication (TWCC) can improve the tolerable bit error rate and extend the maximal transmission distance when used in a quantum key distribution (QKD) system. In this study, we apply the TWCC method to improve the performance of reference-frame-independent quantum key distribution (RFI-QKD), and analyze the influence of the TWCC method on the performance of decoy-state RFI-QKD in both asymptotic and non-asymptotic cases. Our numerical simulation results show that the TWCC method is able to extend the maximal transmission distance from 175 km to 198 km and improve the tolerable bit error rate from 10.48% to 16.75%. At the same time, the performance of RFI-QKD in terms of the secret key rate and maximum transmission distance are still greatly improved when statistical fluctuations are considered. We conclude that RFI-QKD with the TWCC method is of practical interest.

关键词: quantum key distribution, reference-frame-independent, two-way classical communication

Abstract: The data post-processing scheme based on two-way classical communication (TWCC) can improve the tolerable bit error rate and extend the maximal transmission distance when used in a quantum key distribution (QKD) system. In this study, we apply the TWCC method to improve the performance of reference-frame-independent quantum key distribution (RFI-QKD), and analyze the influence of the TWCC method on the performance of decoy-state RFI-QKD in both asymptotic and non-asymptotic cases. Our numerical simulation results show that the TWCC method is able to extend the maximal transmission distance from 175 km to 198 km and improve the tolerable bit error rate from 10.48% to 16.75%. At the same time, the performance of RFI-QKD in terms of the secret key rate and maximum transmission distance are still greatly improved when statistical fluctuations are considered. We conclude that RFI-QKD with the TWCC method is of practical interest.

Key words: quantum key distribution, reference-frame-independent, two-way classical communication

中图分类号: (Quantum cryptography and communication security)

03.67.Dd

03.67.Hk (Quantum communication) 03.67.-a (Quantum information)

Chun Zhou(周淳), Hai-Tao Wang(汪海涛), Yi-Fei Lu(陆宜飞), Xiao-Lei Jiang(姜晓磊), Yan-Mei Zhao(赵燕美), Yu Zhou(周雨), Yang Wang(汪洋), Jia-Ji Li(李家骥), Yan-Yang Zhou(周砚扬), Xiang Wang(汪翔), Hong-Wei Li(李宏伟), and Wan-Su Bao(鲍皖苏). Reference-frame-independent quantum key distribution with two-way classical communication[J]. 中国物理B, 2024, 33(10): 100302-100302.

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Reference-frame-independent quantum key distribution with two-way classical communication

Reference-frame-independent quantum key distribution with two-way classical communication

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