1.Information and Navigation College, Air Force Engineering University, Xi’an 710077, China 2.State Key Laboratory of Cryptology, Beijing 100878, China 3.College of Information and Communication, National University of Defense and Technology, Xi’an 710006, China
Fund Project:Project supported by the National Natural Science Foundation of China (Grant No. 11704412), the Open Foundation of State Key Laboratory of Cryptography Science and Technology, China (Grant No. MMKFKT201823), the Key Research and Development Program of Shaanxi Province, China (Grant No. 2019ZDLGY09-01), and the Key Development Program of the National University of Defense Technology, China (Grant No. zk17-02-09)
Received Date:09 September 2019
Accepted Date:25 September 2019
Available Online:27 November 2019
Published Online:01 December 2019
Abstract:Reference-frame-independent measurement-device-independent quantum key distribution is adopted to avoid aligning the reference frames in realistic setup, which can guarantee the system security against the slow drift of reference frame. However, the relative motion of reference frame including deviation and fluctuation can influence the performance of reference-frame-independent measurement-device-independent quantum key distribution in practical experimental demonstration. In this paper, taking finite effect into consideration, the performance of reference-frame-independent measurement-device-independent quantum key distribution with biased bases under reference frame deviation and fluctuation is presented to evaluate the effect of the relative motion of reference frame on our scheme, which makes the analysis conform to reality. Our simulation results imply that the key rates fluctuate periodically with the reference frame rotating, while declining with the reference frame fluctuation increasing. Keywords:quantum cryptography/ quantum key distribution/ reference frame independent/ measurement device independent
图 4 参考系偏移和波动下有偏基RFI-MDI-QKD协议密钥率变化图 (a) 密钥率R与偏移角$\theta $的关系图; (b) 协议密钥率R与波动角$\delta $的关系图 Figure4. Secure key rates of RFI-MDI-QKD with biased bases under reference frame deviation and fluctuation: (a) The secure key rates R vs. the reference frame deviation $\theta $; (b) the secure key rates R vs. the reference frame fluctuation $\delta $.