Improvement and security analysis of multi-ring discrete modulation continuous variable quantum secret sharing scheme

doi:10.1088/1674-1056/ad3b81

中国物理B ›› 2024, Vol. 33 ›› Issue (7): 70303-070303.doi: 10.1088/1674-1056/ad3b81

Improvement and security analysis of multi-ring discrete modulation continuous variable quantum secret sharing scheme

Huan-Yao Jiang(姜欢窈)^1,†, Min Nie(聂敏)¹, Guang Yang(杨光)¹, Ai-Jing Sun(孙爱晶)¹, Mei-Ling Zhang(张美玲)¹, and Chang-Xing Pei(裴昌幸)²

1 School of Communications and Information Engineering & School of Artificial Intelligence, Xi'an University of Posts and Telecommunications, Xi'an 710121, China;
2 State Key Laboratory of Integrated Service Networks, Xidian University, Xi'an 710071, China

收稿日期:2023-12-26 修回日期:2024-02-29 接受日期:2024-04-07 出版日期:2024-06-18 发布日期:2024-06-20
通讯作者: Huan-Yao Jiang E-mail:1134319164@qq.com
基金资助:
Project supported by the National Natural Science Foundation of China (Grant Nos. 61971348 and 61201194).

Improvement and security analysis of multi-ring discrete modulation continuous variable quantum secret sharing scheme

Huan-Yao Jiang(姜欢窈)^1,†, Min Nie(聂敏)¹, Guang Yang(杨光)¹, Ai-Jing Sun(孙爱晶)¹, Mei-Ling Zhang(张美玲)¹, and Chang-Xing Pei(裴昌幸)²

1 School of Communications and Information Engineering & School of Artificial Intelligence, Xi'an University of Posts and Telecommunications, Xi'an 710121, China;
2 State Key Laboratory of Integrated Service Networks, Xidian University, Xi'an 710071, China

Received:2023-12-26 Revised:2024-02-29 Accepted:2024-04-07 Online:2024-06-18 Published:2024-06-20
Contact: Huan-Yao Jiang E-mail:1134319164@qq.com
Supported by:
Project supported by the National Natural Science Foundation of China (Grant Nos. 61971348 and 61201194).

摘要/Abstract

摘要： In order to avoid the complexity of Gaussian modulation and the problem that the traditional point-to-point communication DM-CVQKD protocol cannot meet the demand for multi-user key sharing at the same time, we propose a multi-ring discrete modulation continuous variable quantum key sharing scheme (MR-DM-CVQSS). In this paper, we primarily compare single-ring and multi-ring M-symbol amplitude and phase-shift keying modulations. We analyze their asymptotic key rates against collective attacks and consider the security key rates under finite-size effects. Leveraging the characteristics of discrete modulation, we improve the quantum secret sharing scheme. Non-dealer participants only require simple phase shifters to complete quantum secret sharing. We also provide the general design of the MR-DM-CVQSS protocol. We conduct a comprehensive analysis of the improved protocol's performance, confirming that the enhancement through multi-ring M-PSK allows for longer-distance quantum key distribution. Additionally, it reduces the deployment complexity of the system, thereby increasing the practical value.

关键词: discrete modulation, continuous variable, quantum secret sharing scheme

Abstract: In order to avoid the complexity of Gaussian modulation and the problem that the traditional point-to-point communication DM-CVQKD protocol cannot meet the demand for multi-user key sharing at the same time, we propose a multi-ring discrete modulation continuous variable quantum key sharing scheme (MR-DM-CVQSS). In this paper, we primarily compare single-ring and multi-ring M-symbol amplitude and phase-shift keying modulations. We analyze their asymptotic key rates against collective attacks and consider the security key rates under finite-size effects. Leveraging the characteristics of discrete modulation, we improve the quantum secret sharing scheme. Non-dealer participants only require simple phase shifters to complete quantum secret sharing. We also provide the general design of the MR-DM-CVQSS protocol. We conduct a comprehensive analysis of the improved protocol's performance, confirming that the enhancement through multi-ring M-PSK allows for longer-distance quantum key distribution. Additionally, it reduces the deployment complexity of the system, thereby increasing the practical value.

Key words: discrete modulation, continuous variable, quantum secret sharing scheme

中图分类号: (Quantum communication)

03.67.Hk

03.67.Dd (Quantum cryptography and communication security) 03.67.-a (Quantum information)

Huan-Yao Jiang(姜欢窈), Min Nie(聂敏), Guang Yang(杨光), Ai-Jing Sun(孙爱晶), Mei-Ling Zhang(张美玲), and Chang-Xing Pei(裴昌幸). Improvement and security analysis of multi-ring discrete modulation continuous variable quantum secret sharing scheme[J]. 中国物理B, 2024, 33(7): 70303-070303.

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Improvement and security analysis of multi-ring discrete modulation continuous variable quantum secret sharing scheme

Improvement and security analysis of multi-ring discrete modulation continuous variable quantum secret sharing scheme

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