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/0609180quant-ph
收藏

一种具有实用信源和检测器的高效量子密钥分发

Efficient quantum key distribution with practical sources and detectors

Masato Koashi

摘要:

研究了一个仅使用实际设备的量子密钥分发系统的安全性。目前,衰减激光脉冲被广泛使用,并被认为是最实用的光源。对于光子的接收器,阈值(或开/关)光子探测器几乎是唯一的选择。结合诱骗态的思想和基于不确定原理的安全论证,我们证明了由这种实用设备组成的QKD系统可以在密钥速率和距离限制没有任何显著损失的情况下实现无条件安全。

英文摘要:

We consider the security of a system of quantum key distribution (QKD) using only practical devices. Currently, attenuated laser pulses are widely used and considered to be the most practical light source. For the receiver of photons, threshold (or on/off) photon detectors are almost the only choice. Combining the decoy-state idea and the security argument based on the uncertainty principle, we show that a QKD system composed of such practical devices can achieve the unconditional security without any significant penalty in the key rate and the distance limitation.

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。

↑