无需切换的量子密码学。

Quantum cryptography without switching.

作者信息

Weedbrook Christian, Lance Andrew M, Bowen Warwick P, Symul Thomas, Ralph Timothy C, Lam Ping Koy

机构信息

Quantum Optics Group, Department of Physics, Faculty of Science, Australian National University, ACT 0200, Australia.

出版信息

Phys Rev Lett. 2004 Oct 22;93(17):170504. doi: 10.1103/PhysRevLett.93.170504.

DOI:10.1103/PhysRevLett.93.170504

PMID:15525058

Abstract

We propose a new coherent state quantum key distribution protocol that eliminates the need to randomly switch between measurement bases. This protocol provides significantly higher secret key rates with increased bandwidths than previous schemes that only make single quadrature measurements. It also offers the further advantage of simplicity compared to all previous protocols which, to date, have relied on switching.

摘要

我们提出了一种新的相干态量子密钥分发协议，该协议无需在测量基之间进行随机切换。与仅进行单正交测量的先前方案相比，此协议在带宽增加的情况下提供了显著更高的密钥率。与迄今为止依赖切换的所有先前协议相比，它还具有简单性这一进一步的优势。