光学学报, 2018, 38 (3): 0327001, 网络出版: 2018-03-20
基于指示单光子源的非对称信道量子密钥分配 下载: 814次
Asymmetric-Channel Quantum Key Distribution Based on Heralded Single-Photon Sources
量子光学 指示单光子源 量子密钥分配 测量设备无关 非对称信道 quantum optics heralded single-photon sources quantum key distribution measurement device independent asymmetric channel
摘要
针对传统的量子密钥分配协议未考虑非对称信道的问题, 研究了基于指示单光子源的非对称信道的测量设备无关量子密钥分配协议的性能参数。主要分析了协议中的平均光子数、单边传输效率、密钥生成率与信道传输损耗之间的关系。比较了指示单光子源下, 对称信道与非对称信道的测量设备无关量子密钥分配协议的性能优劣。仿真结果表明, 随着信道传输损耗的增大, 密钥生成率和安全传输距离逐渐减小, 但非对称信道的性能仍优于对称信道的性能。
Abstract
Aiming at the fact that the asymmetric channel is not considered in the traditional quantum key distribution (QKD) protocol, the performance parameters of measurement-device-independent QKD protocol for the asymmetric channel with heralded single-photon sources are investigated. The relationships between the mean-photon numbers, the unilateral transmission efficiency, the key generation rate and the channel transmission loss in the protocol are analyzed. The performances of measurement-device-independent QKD protocols with the heralded single-photon sources for symmetric and asymmetric channels are compared. The simulation results show that, as the channel transmission loss increases, the key generation rate and the safe transmission distance decrease gradually, but the performance for the asymmetric channel is still higher than that for the symmetric channel.
何业锋, 宋畅, 李东琪, 康丹娜. 基于指示单光子源的非对称信道量子密钥分配[J]. 光学学报, 2018, 38(3): 0327001. He Yefeng, Song Chang, Li Dongqi, Kang Danna. Asymmetric-Channel Quantum Key Distribution Based on Heralded Single-Photon Sources[J]. Acta Optica Sinica, 2018, 38(3): 0327001.