与参考帧无关的异步测量设备无关的量子密钥分发

IF 4.4 Q1 OPTICS
Kaiyi Shi, Yue Li, Haoyang Wang, Chang Liu, Duo Ma, Yujia Zhang, Fangze Ma, Haiqiang Ma
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引用次数: 0

摘要

异步量子密钥分发协议(AMDI-QKD)是一种高性能的量子密钥分发协议,它可以在不需要锁相和相位跟踪技术的情况下优于Pirandola-Laurenza-Ottaviani-Banchi (PLOB)绑定。然而,该协议使用通信双方的相对相位信息进行编码,参考帧的漂移不可避免地影响QKD系统的性能,而参考帧独立量子密钥分发(RFI-QKD)具有容忍参考帧缓慢变化的优点。本文提出了一种与参考帧无关的异步量子密钥分发(RFI-AMDI-QKD)方案,该方案不需要双方干涉仪之间的相位对准,并证明了该协议可以长距离传输,并且对参考帧的漂移具有鲁棒性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Reference-Frame-Independent Asynchronous Measurement-Device-Independent Quantum Key Distribution

Asynchronous quantum key distribution protocol (AMDI-QKD) is a high performance quantum key distribution protocol while it can outperform the Pirandola–Laurenza–Ottaviani–Banchi (PLOB) bound without the need of phase-locking and phase-tracking techniques. However, the protocol applies the relative phase information of the communicating parties for encoding, and the drift of the reference frame inevitably affects the performance of the QKD system, whereas reference frame independent quantum key distribution (RFI-QKD) has the advantage of tolerating the slow change of the reference frame. In this study, a reference frame-independent asynchronous quantum key distribution (RFI-AMDI-QKD) scheme is proposed, which does not require phase alignment between the interferometers of both parties, and it is shown that the protocol can transmit over long distances and is robust to the drift of the reference frame.

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