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OALib Journal期刊
ISSN: 2333-9721
费用：99美元
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诱惑态下相位差分量子密钥分发效率分析
, PP. 437-441
Keywords: 光通信,相位差分,诱惑态,密钥生成效率
Abstract:
讨论基于微弱相干脉冲的相位差分量子密钥分发系统,综合分析系统的安全性问题,给出了密钥生成效率表达式.分析诱惑态对相位差分量子密钥分发系统安全性的影响,并给出了结合诱惑态后的密钥生成效率表达式.结果表明,结合诱惑态的相位差分量子密钥分发过程不再受到分光子攻击和序列攻击的威胁,其密钥分发效率与Hoi-Kwong等人提出的诱惑态的表述结果一致.实验数据显示,结合诱惑态后的相位差分系统,其安全传输距离得到了进一步提高,量子密钥分发效率提高了约1个数量级.
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