光通信技术2019，Vol.43Issue(8)：42-46,5.DOI:10.13921/j.cnki.issn1002-5561.2019.08.011
实时跟踪补偿的OAM测量设备无关量子密钥分发
Measurement-device-independent QKD based on orbital angular momentum with real-time tracking compensation
摘要
Abstract
Distortion phase introduced in atmospheric channel transmission seriously limits the secure transmission distance of orbital angular momentum (OAM) quantum key distribution based on free space. In order to realize real-time monitoring and compensation of distortion phase, based on adaptive optics technology, a measurement-device-independent quantum key distribution (OAM-MDI-QKD) scheme for real-time tracking compensation of OAM coding is proposed. Wavefront compensation and phase conjugation, are used to design an adaptive optical system with double compensation. The structure of a single light source is used to solve the problem of wavelength mode mismatch between two light sources. The problem of inaccuracy in the measurement reference frame of traditional MDI-QKD is solved by coding with OAM. The simulation results show that the loss tolerance of the proposed scheme is 42 dB higher than that of the traditional MDI-QKD scheme and 2 dB higher than that of the uncompensated OAM-MDI-QKD scheme under the same channel loss.关键词
测量设备无关量子密钥分发/轨道角动量/自适应光学补偿/安全码率Key words
measurement-device-independent quantum key distribution/ OAM/ adaptive optical compensation/ security bit rate分类
信息技术与安全科学引用本文复制引用
何翼龙1,郭邦红2,1*..实时跟踪补偿的OAM测量设备无关量子密钥分发[J].光通信技术,2019,43(8):42-46,5.基金项目
国家自然科学基金面上项目(No. 61572203)资助 （No. 61572203）
广东省重点领域研发计划(No.2018B030325002)资助 （No.2018B030325002）
瞬态光学与光子技术国家重点实验室开放基金(No. SKLST201602)资助 （No. SKLST201602）
中国科学院量子信息重点实验室项目(No. KQI201508)资助. （No. KQI201508）
