Decoy state measurement-device-independent quantum key distribution based on the Clauser-Horne-Shimony-Holt inequality
Decoy state measurement-device-independent quantum key distribution based on the Clauser-Horne-Shimony-Holt inequality
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DOI：
10.1103/physreva.90.034302
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发表时间：
2014-08
期刊：
影响因子：
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通讯作者：
Chunmei Zhang;Mo Li;Hongwei Li;Z. Yin;Dong Wang-;Jing-Zheng Huang;Yun-Guang Han;Man-Li Xu;Wei Chen-;Shuang Wang;Patcharapong Treeviriyanupab;G. Guo;Z. Han
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文献类型：
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作者：
Chunmei Zhang;Mo Li;Hongwei Li;Z. Yin;Dong Wang-;Jing-Zheng Huang;Yun-Guang Han;Man-Li Xu;Wei Chen-;Shuang Wang;Patcharapong Treeviriyanupab;G. Guo;Z. Han
提出了测量设备无关的量子密钥分发（MDI-QKD）协议，以消除检测器侧信道攻击，其安全性依赖于编码系统的完全特征化假设。相比之下，基于Clauser-Horne-Shimony-Holt不等式的MDI-QKD协议（CHSH-MDI-QKD）削弱了这一假设，它只需要在二维希尔伯特空间中制备量子态，并且设备是独立的。在实验实现中，由于缺乏理想的单光子源，量子密钥分配系统中通常采用的弱相干态可以在高维空间中制备。本文研究了具有$s（3 \le s \le 5）$强度的诱骗态CHSH-MDI-QKD协议，包括一个信号态和$s-1$诱骗态，并考虑了有限尺寸效应对具有5个强度的诱骗态CHSH-MDI-QKD协议的影响.仿真结果表明，该方案具有很好的实用性。
The measurement-device-independent quantum key distribution (MDI-QKD) protocol is proposed to remove the detector side channel attacks, while its security relies on the assumption that the encoding systems are perfectly characterized. In contrast, the MDI-QKD protocol based on the Clauser-Horne-Shimony-Holt inequality (CHSH-MDI-QKD) weakens this assumption, which only requires the quantum state to be prepared in the two-dimensional Hilbert space and the devices are independent. In experimental realizations, the weak coherent state, which is always used in QKD systems due to the lack of an ideal single photon source, may be prepared in the high-dimensional space. In this paper, we investigate the decoy-state CHSH-MDI-QKD protocol with $s(3 \le s \le 5)$ intensities, including one signal state and $s-1$ decoy states, and we also consider the finite-size effect on the decoy-state CHSH-MDI-QKD protocol with five intensities. Simulation results show that this scheme is very practical.