A New Security Proof for Twin-Field Quantum Key Distribution (QKD)
A New Security Proof for Twin-Field Quantum Key Distribution (QKD)
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DOI：
10.3390/app14010187
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发表时间：
2023-12
期刊：
影响因子：
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通讯作者：
Walter O. Krawec
中科院分区：
文献类型：
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作者：
Walter O. Krawec
与标准量子密钥分发（QKD）协议相比，双场量子密钥分发（TF - QKD）协议能够在长距离传输中提高密钥生成率。它们甚至无需量子中继器就能突破PLOB极限。在这项研究中，我们重新审视了之前的一种TF - QKD协议，并为其推导出一种全新且简洁的安全性证明。我们还研究了该协议的几种变体，并探究了它们的性能，结果表明由于协议的非对称特性，出现了一些有趣的表现。
Twin-field QKD (TF-QKD) protocols allow for increased key rates over long distances when compared to standard QKD protocols. They are even able to surpass the PLOB bound without the need for quantum repeaters. In this work, we revisit a previous TF-QKD protocol and derive a new, simple, proof of security for it. We also look at several variants of the protocol and investigate their performance, showing some interesting behaviors due to the asymmetric nature of the protocol.