%0 Journal Article
%T A highly stable differential phase shift key distribution QKD system<br>高稳定的差分相位编码量子密钥分发系统
%A Li Ming-Ming
%A Wang Fa-Qiang
%A Lu Yi-Qun
%A Zhao Feng
%A Chen Xia
%A Liang Rui-Sheng
%A Liu Song-Hao
%A <br>李明明
%A 王发强
%A 路轶群
%A 赵峰
%A 陈霞
%A 梁瑞生
%A 刘颂豪
%J 物理学报
%D 2006
%I 
%X We propose and demonstrate an improved differential phase shift key distribution scheme. Alice uses a pulsed laser source and two cascaded fiber loops to get coherent pulses, then modulates them randomly under differential phase shift scheme, which compensates for the random polarization mode dispersion and phase shift. An interferometer made up of two Faraday mirrors is employed to detect single photon under gate mode. In one-way transmission, QKD is free from Trojan attack. Our experiment at setup can work stably for a long time (at least 24h) with an error ratio of 3%. The stable scheme is efficient, economical and favorable for practical application.
%K quantum cryptography
%K quantum key distribution
%K differential phase shift<br>量子保密通信
%K 量子密钥分发
%K 差分相位编码
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=29DF2CB55EF687E7EFA80DFD4B978260&aid=6099A025960A0434&yid=37904DC365DD7266&vid=E514EE58E0E50ECF&iid=9CF7A0430CBB2DFD&sid=3F5141272968AFF9&eid=81C7A8552471CFF6&journal_id=1000-3290&journal_name=物理学报&referenced_num=0&reference_num=14