%0 Journal Article
%T A new method to acquire the half-wave voltage by the quantum bit error rate in the deterministic quantum key distribution system<br>一种基于确定性量子密钥分发误码判据的相位调制器半波电压的精确测定方法
%A Wei Zheng-Jun
%A Wan Wei
%A Wang Jin-Dong
%A Liao Chang-Jun
%A Liu Song-Hao
%A <br>魏正军
%A 万伟
%A 王金东
%A 廖常俊
%A 刘颂豪
%J 物理学报
%D 2011
%I 
%X The value of the half-wave voltage of the phase modulator must be measured with high accuracy to reduce the quantum bit error rate (QBER) in a quantum key distribution system based the phase-coding scheme. A new method to measure the half-wave voltage of the phase modulator in an accuracy of 2 mV by adjusting the quantum bit error rate (QBER) of the deterministic quantum key distribution is proposed experimentally to increase the accuracy of the half-wave voltage and reduce the error rate of the quantum key distribution system. The experimental results show that this method can be used to acquire efficiently the half-wave voltage of the phase modulator in a high accuracy which can make the error rate from adding the inaccurate voltage to the phase modulator decrease to the greatest extent.
%K quantum cryptography
%K phase-encoding
%K half-wave voltage
%K quantum bit error rate<br>量子保密通信
%K 相位编码
%K 半波电压
%K 误码率
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=29DF2CB55EF687E7EFA80DFD4B978260&aid=F437B1BF01E7F4869522A09231950682&yid=9377ED8094509821&vid=BFE7933E5EEA150D&iid=9CF7A0430CBB2DFD&sid=6B3068A7C27BD349&eid=F27A401E323B6FAD&journal_id=1000-3290&journal_name=物理学报&referenced_num=0&reference_num=21