计算机工程2016，Vol.42Issue(12)：129-132,4.DOI:10.3969/j.issn.1000-3428.2016.12.023
量子密钥分发中的偏振补偿方法
Method for Polarization Compensation in Quantum Key Distribution
摘要
Abstract
Quantum key distribution uses polarization coding.When using conventional single-mode fiber as the channel for quantum state transfer,optical fiber has a slight birefringence and cannot maintain the quantum state of polarization.In this case,this paper proposes a method to make polarization compensation for quantum state.Using the polarization compensation method of successive approximation,it is a promising scheme to complete the polarization compensation by rotating the combination of 2 quarter-wave plate and 1 half-wave plate successively.By measuring the values of polarization contrast ratio,it rotates the three wave plates according to the results of the measurement,until the polarization performance of the system finally meets the requirements.Experimental results show that compared with the polarization compensation method of traversal mode,the method of successive approximation can realize polarization compensation more quickly.关键词
偏振补偿/逐步逼近/遍历/波片/阈值/偏振对比Key words
polarization compensation/successive approximation/traverse/wave plate/threshold/polarization contrast分类
信息技术与安全科学引用本文复制引用
钟先锋,曹蕾,刘尉悦,王潮泽,李凤芝,蒋志迪,彭承志..量子密钥分发中的偏振补偿方法[J].计算机工程,2016,42(12):129-132,4.基金项目
浙江省自然科学基金(LY13F050007,LY17F050004) （LY13F050007,LY17F050004）
宁波市自然科学基金(2010A610175). （2010A610175）
