激光技术Issue(6)：756-760,5.DOI:10.7510/jgjs.issn.1001-3806.2015.06.005
量子密钥分配系统中非线性偏振耦合的研究
Investigation on nonlinear polarization coupling in quantum key distribution
董颖娣 1彭进业2
作者信息
- 1. 西北工业大学电子信息学院，西安710072
- 2. 西安建筑科技大学信息与控制工程学院，西安710055
- 折叠
摘要
Abstract
Because of the effect of nonlinear polarization of transmission fiber , coupling ratio between local oscillator and quantum signal in a quantum key distribution system is decreased , signal jitters which leads to polarization multiplexing is increased, and security and stability of the system are decreased .To enhance technical performance of polarization encodement of quantum optics , after theoretical analysis and numerical simulation , operational experiment scheme was proposed to solve the polarization jitters caused by nonlinear polarization coupling of fiber .The results show that signal stability of polarization multiplexing enhances and transmission capacity of quantum key distribution increases to 61%by using feedback of spectral test results to control fiber nonlinear polarization coupling ratio between local oscillator and quantum signal .The research is helpful for practical application of polarization coding technology in quantum key distribution .关键词
量子光学/量子密钥分配/反馈控制/偏振编码/非线性偏振/偏振抖动Key words
quantum optics/quantum key distribution/feedback control/polarization encode/nonlinear polarization/polarization jitter分类
数理科学引用本文复制引用
董颖娣,彭进业..量子密钥分配系统中非线性偏振耦合的研究[J].激光技术,2015,(6):756-760,5.
