具有源缺陷的探测器设备无关量子秘密共享。

Detector-device-independent quantum secret sharing with source flaws.

作者信息

Yang Xiuqing, Wei Kejin, Ma Haiqiang, Liu Hongwei, Yin Zhenqiang, Cao Zhu, Wu Lingan

机构信息

College of Science, Inner Mongolia University of Technology, Hohhot, 010051, China.

Guangxi Key Laboratory for Relativistic Astrophysics, School of Physics Science and Technology, Guangxi University, Nanning, 530004, China.

出版信息

Sci Rep. 2018 Apr 10;8(1):5728. doi: 10.1038/s41598-018-23876-4.

DOI:10.1038/s41598-018-23876-4

PMID:29636492

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC5893579/

Abstract

Measurement-device-independent entanglement witness (MDI-EW) plays an important role for detecting entanglement with untrusted measurement device. We present a double blinding-attack on a quantum secret sharing (QSS) protocol based on GHZ state. Using the MDI-EW method, we propose a QSS protocol against all detector side-channels. We allow source flaws in practical QSS system, so that Charlie can securely distribute a key between the two agents Alice and Bob over long distances. Our protocol provides condition on the extracted key rate for the secret against both external eavesdropper and arbitrary dishonest participants. A tight bound for collective attacks can provide good bounds on the practical QSS with source flaws. Then we show through numerical simulations that using single-photon source a secure QSS over 136 km can be achieved.

摘要

测量设备无关纠缠见证者（MDI-EW）在使用不可信测量设备检测纠缠方面发挥着重要作用。我们对基于GHZ态的量子秘密共享（QSS）协议提出了一种双重盲攻击。利用MDI-EW方法，我们提出了一种针对所有探测器侧信道的QSS协议。我们允许实际QSS系统中存在源缺陷，这样查理就可以在两个参与者爱丽丝和鲍勃之间安全地远距离分发密钥。我们的协议针对外部窃听者和任意不诚实参与者给出了提取密钥率的条件。集体攻击的紧密界限可以为存在源缺陷的实际QSS提供良好界限。然后我们通过数值模拟表明，使用单光子源可以实现超过136公里的安全QSS。