%0 Journal Article
%T Experimental Study on Practical Quantum Key Distribution Scheme with Time-Multiplexed Technique<br>
%A HUANG Yu-Xian
%A HU Hua-Peng
%A LIANG Rui-Sheng
%A LU Yi-Qun
%A WANG Jin-Dong
%A <br>
%J 中国物理快报
%D 2008
%I 
%X We present a scheme that is capable of detecting photon numbers during the quantum key distribution (QKD) based on an improved differential phase shift (DPS) system without Trojan horse attack. A time-multiplexed detector (TMD) is set in for the photon-number resolution. Two fibre loops are used for detecting photon numbers as well as distributing keys. The long-term stabilization is guaranteed by two Faraday mirrors (FM) at Bob's site to automatically compensate for polarization defect. Our experimental study (90km QKD is completed) indicates that such a system is stable and secure which nearly reaches the performance of a single photon scheme.
%K 42
%K 50
%K -p
%K 42
%K 50
%K Ar
%K 42
%K 50
%K Dv<br>
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=E27DA92E19FE279A273627875A70D74D&aid=9E55F3509345E0CBBFBBC19A96616DAA&yid=67289AFF6305E306&vid=C5154311167311FE&iid=DF92D298D3FF1E6E&sid=BD645585791E8E29&eid=C517778D8EA6C920&journal_id=0256-307X&journal_name=中国物理快报&referenced_num=0&reference_num=0