Improving the performance of practical decoy-state quantum key distribution with advantage distillation technology

被引：0
作者：
Hong-Wei Li
Chun-Mei Zhang
Mu-Sheng Jiang
Qing-Yu Cai
机构：
[1] SSF IEU,Henan Key Laboratory of Quantum Information and Cryptography
[2] Nanjing University of Posts and Telecommunications,Institute of Quantum Information and Technology
[3] Hainan University,School of Information and Communication Engineering
来源：
Communications Physics | / 5卷
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摘要：
Quantum key distribution (QKD) provides a promising solution for sharing information-theoretic secret keys between two remote legitimate parties. To improve the maximal transmission distance and the maximal error rate tolerance, we apply the advantage distillation technology to analyze the security of practical decoy-state QKD systems. Based on the practical experimental parameters, the device-dependent QKD protocols and the measurement-device-independent QKD protocols have been respectively analyzed, and our analysis results demonstrate that the advantage distillation technology can significantly improve the performance of various QKD protocols. In the four-state and six-state device-dependent QKD protocols, we prove that the maximal transmission distance can be improved from 142 km to 180 km and from 146 km to 187 km respectively. In the four-state and six-state measurement-device-independent QKD protocols, we prove that the maximal transmission distance can be improved from 195 km to 273 km and from 200 km to 282 km respectively.
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