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一种基于光子偏振旋转的量子身份认证方案

, PP. 40-45

Keywords: 量子光学,量子身份认证,偏振旋转,重复编码,传输损耗

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Abstract:

实际的量子密钥分发过程中,传输损耗和探测器的效率都直接影响密钥的产生效率。量子身份认证需要通信双方保证认证信息的完整性。针对以上问题,提出了一种基于光子偏振旋转的量子身份认证协议,利用对认证信息的重复编码解决传输损耗问题。考虑到协议的安全性,该协议在相邻的有效认证量子态间编入随机态。安全性分析表明该协议可成功抵御截取重发攻击以及光子数劈裂攻击。在此基础上,设计了现有技术条件下可操作的认证系统方案,考虑了传输损耗和探测效率,具有实用意义。

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