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arXiv quant-ph/0412173quant-ph
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50 km标准光纤上无条件安全的量子密钥分发

Unconditionally secure quantum key distribution over 50km of standard telecom fibre

C. Gobby, Z. L. Yuan, A. J. Shields

摘要:

我们证明了一个弱脉冲量子密钥分发系统使用的BB84协议是安全的,对所有的个人攻击,包括光子数分裂。通过仔细控制弱脉冲强度,我们证明了最大安全比特率作为光纤长度的函数。对于长度超过50公里的标准电信光纤,可以形成无条件安全的密钥。

英文摘要:

We demonstrate a weak pulse quantum key distribution system using the BB84 protocol which is secure against all individual attacks, including photon number splitting. By carefully controlling the weak pulse intensity we demonstrate the maximum secure bit rate as a function of the fibre length. Unconditionally secure keys can be formed for standard telecom fibres exceeding 50 km in length.

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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