Asymmetric mode-pairing quantum key distribution with advantage distillation  

作　　者：Hai-Tao Wang Chun Zhou Yi-Fei Lu Chen-Peng Hao Yan-Mei Zhao Yan-Yang Zhou Hong-Wei Li Wan-Su Bao 汪海涛;周淳;陆宜飞;郝辰鹏;赵燕美;周砚扬;李宏伟;鲍皖苏

机构地区：[1]Henan Key Laboratory of Quantum Information and Cryptography,SSF IEU,Zhengzhou 450001,China

出　　处：《Chinese Physics B》2025年第4期109-115,共7页中国物理B(英文版)

基　　金：Project 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);the Anhui Initiative in Quantum Information Technologies.

摘　　要：Mode-pairing quantum key distribution(MP-QKD)is an excellent scheme that can exceed the repeaterless ratetransmittance bound without complex phase locking.Nevertheless,MP-QKD usually needs to ensure that the communication distances of the two channels are equal.To address the problem,the asymmetric MP-QKD protocol is proposed.In this paper,we enhance the performance of the asymmetric MP-QKD protocol based on the advantage distillation(AD)method without modifying the quantum process.The simulation results show that the AD method can extend the communication distance by about 70 km in the case of asymmetry.And we observe that as the misalignment error increases,the AD method further increases the expandable communication distance.Our work can further enhance the robustness and promote the practical application of the asymmetric MP-QKD.

关 键 词：quantum key distribution asymmetric mode-pairing advantage distillation 

分 类 号：O413[理学—理论物理]