Improving the security of quantum key distribution with multi-step advantage distillation

被引：0
|
作者：
Hao, Chen-Peng [1 ]
Liu, Yang [2 ]
Wang, Yang [1 ]
Zhou, Chun [1 ]
Zhou, Yan-Yang [1 ]
Bao, Wan-Su [1 ]
Li, Hong-Wei [1 ]
机构：
[1] SSF IEU, Henan Key Lab Quantum Informat & Cryptog, Zhengzhou 450001, Henan, Peoples R China
[2] Informat Engn Univ, Zhengzhou 450001, Henan, Peoples R China
来源：
QUANTUM INFORMATION PROCESSING | 2024年 / 23卷 / 04期
基金：
中国国家自然科学基金;
关键词：
Quantum key distribution; Advantage distillation; Multi-step; Key rate; CRYPTOGRAPHY;
D O I：
10.1007/s11128-024-04354-5
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
How to improve the key rate is an important question to analyze the security of quantum key distribution (QKD). Based on the one-step advantage distillation (OSAD), the key rate and transmission distance can be improved. In this work, we propose the multi-step advantage distillation (MSAD), which can further improve the key rate compared with OSAD. By applying MSAD, the single-photon QKD protocol and decoy-state QKD protocol are, respectively, analyzed. The analysis results demonstrate that MSAD can sharply improve the key rate under the condition of high error rate or long transmission distance.
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收藏
页数：14
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