arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv quant-ph/0205060quant-ph
收藏

误码率高达27.6%的量子信道共享密钥的实用方案

Practical Scheme To Share A Secret Key Through An Up To 27.6% Bit Error Rate Quantum Channel

H. F. Chau

摘要:

通过量子密钥分发在两个合作参与者之间共享的秘密密钥是安全的,可以抵抗物理定律允许的任何窃听攻击。然而,只有当由于窃听或不完善的设备而导致的量子信道错误率低时,才能建立这样的密钥。在这里,我报告了一个实用的量子密钥分发方案,利用自适应隐私放大过程与双向经典通信。然后,我证明了该方案产生一个秘密密钥时,误码率的量子信道是小于$0.5-0.1\sqrt{5} \approx 27.6%$,从而使它成为迄今为止已知的最抗错误的方案。

英文摘要:

A secret key shared through quantum key distribution between two cooperative players is secure against any eavesdropping attack allowed by the laws of physics. Yet, such a key can be established only when the quantum channel error rate due to eavesdropping or imperfect apparatus is low. Here, I report a practical quantum key distribution scheme making use of an adaptive privacy amplification procedure with two-way classical communication. Then, I prove that the scheme generates a secret key whenever the bit error rate of the quantum channel is less than $0.5-0.1\sqrt{5} \approx 27.6%$, thereby making it the most error resistant scheme known to date.

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。

↑