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arXiv quant-ph/0403131quant-ph
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强相位参考脉冲相干态量子密钥分发的无条件安全性

Unconditional security of coherent-state quantum key distribution with strong phase-reference pulse

Masato Koashi

摘要:

我们证明了一个量子密钥分发协议的无条件安全性,其中比特值被编码在相对于强参考脉冲的弱相干态脉冲的相位中。与使用弱脉冲作为单光子源的替代品的实施方式相比,发现可实现的密钥速率仅随着信道的传输而线性降低。

英文摘要:

We prove the unconditional security of a quantum key distribution protocol in which bit values are encoded in the phase of a weak coherent-state pulse relative to a strong reference pulse. In contrast to implementations in which a weak pulse is used as a substitute for a single-photon source, the achievable key rate is found to decrease only linearly with the transmission of the channel.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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