中国物理B ›› 2021, Vol. 30 ›› Issue (11): 110303-110303.doi: 10.1088/1674-1056/abf350
Zhongqi Sun(孙钟齐), Yanxin Han(韩雁鑫), Tianqi Dou(窦天琦), Jipeng Wang(王吉鹏), Zhenhua Li(李振华), Fen Zhou(周芬), Yuqing Huang(黄雨晴), and Haiqiang Ma(马海强)†
Zhongqi Sun(孙钟齐), Yanxin Han(韩雁鑫), Tianqi Dou(窦天琦), Jipeng Wang(王吉鹏), Zhenhua Li(李振华), Fen Zhou(周芬), Yuqing Huang(黄雨晴), and Haiqiang Ma(马海强)†
摘要: Reference-frame-independent quantum key distribution (RFI-QKD) can allow a quantum key distribution system to obtain the ideal key rate and transmission distance without reference system calibration, which has attracted much attention. Here, we propose an RFI-QKD protocol based on wavelength division multiplexing (WDM) considering finite-key analysis and crosstalk. The finite-key bound for RFI-QKD with decoy states is derived under the crosstalk of WDM. The resulting secret key rate of RFI-QKD, which is more rigorous, is obtained. Simulation results reveal that the secret key rate of RFI-QKD based on WDM is affected by the multiplexing channel number, as well as crosstalk between adjacent channels.
中图分类号: (Quantum cryptography and communication security)