激光与光电子学进展, 2017, 54 (12): 122703, 网络出版: 2017-12-11
预报相干光子对的测量设备无关量子密钥分发协议
Measurement-Device-Independent Quantum Key Distribution Protocols for Heralded Pair Coherent State
量子光学 测量设备无关量子密钥分发 弱相干光源 预报相干光子对 统计波动分析 quantum optics measurement-device-independent quantum key distrib weak coherent source heralded pair coherent state statistical fluctuation analysis
摘要
提出了一种基于预报相干光子对(HPCS)的测量设备无关量子密钥分发(MDI-QKD)协议的改进方案, 降低了长距离量子密钥分发中由暗计数引起的误码率。仿真结果表明, 与弱相干光源相比, HPCS能降低空脉冲数量比例从而增加安全传输距离; 与预报单光子源相比, HPCS能提高单光子脉冲数量比例从而提高安全密钥生成率。分析了有限密钥长度对基于HPCS的三诱骗态MDI-QKD的影响。
Abstract
A modified scheme of measurement-device-independent quantum key distribution (MDI-QKD) protocols based on the heralded pair coherent state (HPCS) is proposed, which decreases the error rate caused by the dark count in the long distance quantum key distribution. The simulation results show that, compared with a weak coherent source, the HPCS can reduce the quantitative proportion of vacuum and thus increase the transmission distance. Compared with a heralded single photon source, the HPCS can enhance the quantitative proportion of single-photon pulse and thus increase the secure key generation rate. The impact of the finite key length on the MDI-QKD of the three decoy state based on the HPCS is analyzed.
朱卓丹, 张茜, 赵尚弘, 苏力华, 王星宇. 预报相干光子对的测量设备无关量子密钥分发协议[J]. 激光与光电子学进展, 2017, 54(12): 122703. Zhu Zhuodan, Zhang Xi, Zhao Shanghong, Su Lihua, Wang Xingyu. Measurement-Device-Independent Quantum Key Distribution Protocols for Heralded Pair Coherent State[J]. Laser & Optoelectronics Progress, 2017, 54(12): 122703.