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

被引：29

作者：

Gobby, C

Yuan, ZL

Shields, AJ

机构：

[1] Toshiba Res Europe Ltd, Cambridge Res Lab, Cambridge CB4 0WE, England

[2] Univ Cambridge, Cavendish Lab, Cambridge CB3 0HE, England

来源：

ELECTRONICS LETTERS | 2004年 / 40卷 / 25期

关键词：

D O I：

10.1049/el:20045038

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

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

引用

页码：1603 / 1605

页数：3

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