物理学报Issue(7)：32-39,8.DOI:10.7498/aps.62.070301
利用无噪线性光放大器增加连续变量量子密钥分发最远传输距离
Improving the maximum transmission distance of coutinuous variable no-switching QKD protocol∗
摘要
Abstract
Developing quantum key distribution (QKD) protocols that can resist losses and noises is of great importance in practice. We show that the maximum transmission distance and tolerable excess noise of the no-switching CV-QKD protocol can be dramatically increased by using a noiseless linear amplifier (NLA). It is proved that an NLA with a gain g can increase the maximum transmission distance by 20 log10 g km, whereα=0.2 dB/km is the loss coefficient of the fiber channel.α关键词
量子密钥分发/连续变量/最远传输距离/线性无噪放大器Key words
continuous variable/quantum key distribution/maximum transmission distance/noiseless linear am-plifier引用本文复制引用
徐兵杰†,唐春明,陈晖,张文政,朱甫臣..利用无噪线性光放大器增加连续变量量子密钥分发最远传输距离[J].物理学报,2013,(7):32-39,8.基金项目
西安电子科技大学基本科研业务费(项目编号:K5051270001)资助的课题 （项目编号:K5051270001）
