Polarization discriminated time‐bin phase‐encoding measurement‐device‐independent quantum key distribution

Quantum EngineeringVolume 3, Issue 4 e79 RESEARCH ARTICLE Polarization discriminated time-bin phase-encoding measurement-device-independent quantum key distribution Guang-Zhao Tang, Guang-Zhao Tang College of Liberal Arts and Sciences, National University of Defense Technology, Changsha, ChinaSearch for more papers by this authorChun-Yan Li, Chun-Yan Li College of Liberal Arts and Sciences, National University of Defense Technology, Changsha, ChinaSearch for more papers by this authorMin Wang, Corresponding Author Min Wang wangmin@baqis.ac.cn Beijing Academy of Quantum Information Sciences, Beijing, China Correspondence Min Wang, Beijing Academy of Quantum Information Sciences, Beijing 100193, China. Email: wangmin@baqis.ac.cnSearch for more papers by this author Guang-Zhao Tang, Guang-Zhao Tang College of Liberal Arts and Sciences, National University of Defense Technology, Changsha, ChinaSearch for more papers by this authorChun-Yan Li, Chun-Yan Li College of Liberal Arts and Sciences, National University of Defense Technology, Changsha, ChinaSearch for more papers by this authorMin Wang, Corresponding Author Min Wang wangmin@baqis.ac.cn Beijing Academy of Quantum Information Sciences, Beijing, China Correspondence Min Wang, Beijing Academy of Quantum Information Sciences, Beijing 100193, China. Email: wangmin@baqis.ac.cnSearch for more papers by this author First published: 29 August 2021 https://doi.org/10.1002/que2.79 Funding information National Natural Science Foundation of China, 11674397, 61671455 Read the full textAboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinked InRedditWechat Abstract The correctness of measurement-device-independent quantum key distribution (MDI-QKD) has been demonstrated in tremendous amount of researches. There is an interesting proposal which can collect all coincidences by transforming two pairs of orthogonal polarization states into the encoding states of MDI-QKD. The attempt is meaningful. Here, based on this proposal, we realize a proof-of-principle demonstration. Only one phase modulator is applied to encode the qubits. The phase-reference-frame is aligned by modulating the phase modulator of the phase modulation unit. We modulate the signals into three intensities, and a secure key rate of bits per pulse is successfully demonstrated. Our experimental system simplifies the encoding process and has the potential to implement the reference-frame-independent MDI-QKD protocol. Open Research DATA AVAILABILITY STATEMENT The data that support the findings of this study are available on request from the corresponding author. The data are not publicly available due to privacy or ethical restrictions. Volume3, Issue4December 2021e79 RelatedInformation