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.
引用
收藏
页数：14
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