Twin-Field Quantum Key Distribution Protocol Based on Wavelength-Division-Multiplexing Technology  

作　　者：Yanxin Han Zhongqi Sun Tianqi Dou Jipeng Wang Zhenhua Li Yuqing Huang Pengyun Li Haiqiang Ma 韩雁鑫;孙钟齐;窦天琦;王吉鹏;李振华;黄雨晴;李鹏云;马海强(School of Science and State Key Laboratory of Information Photonics and Optical Communications,Beijing University of Posts and Telecommunications,Beijing 100876,China;China Telecom Research Institute,Beijing 102209,China;China Academy of Electronics and Information Technology,China Electronic Technology Group Corporation,Beijing 100041,China)

机构地区：[1]School of Science and State Key Laboratory of Information Photonics and Optical Communications,Beijing University of Posts and Telecommunications,Beijing 100876,China [2]China Telecom Research Institute,Beijing 102209,China [3]China Academy of Electronics and Information Technology,China Electronic Technology Group Corporation,Beijing 100041,China

出　　处：《Chinese Physics Letters》2022年第7期3-8,共6页中国物理快报（英文版）

基　　金：supported by the State Key Laboratory of Information Photonics and Optical Communications, Beijing University of Posts and Telecommunications (Grant No. IPOC2021ZT10);the National Natural Science Foundation of China (Grant No. 11904333);the Fundamental Research Funds for the Central Universities (Grant No. 2019XD-A02);BUPT Innovation and Entrepreneurship Support Program (Grant No. 2022YC-T051)。

摘　　要：Quantum key distribution(QKD) generates information-theoretical secret keys between two parties based on the physical laws of quantum mechanics. Following the advancement in quantum communication networks, it becomes feasible and economical to combine QKD with classical optical communication through the same fiber using dense wavelength division multiplexing(DWDM) technology. This study proposes a detailed scheme of TF-QKD protocol with DWDM technology and analyzes its performance, considering the influence of quantum channel number and adjacent quantum crosstalk on the secret key rates. The simulation results show that the scheme further increases the secret key rate of TF-QKD and its variants. Therefore, this scheme provides a method for improving the secret key rate for practical quantum networks.

关 键 词：Twin-Field Quantum Key Distribution Protocol Based on Wavelength-Division-Multiplexing Technology QKD Quantum Protocol KEY 

分 类 号：O413[理学—理论物理] TN918.4[理学—物理]