Deterministic secure quantum communication with practical devices

Quantum EngineeringVolume 3, Issue 4 e86 RESEARCH ARTICLE Deterministic secure quantum communication with practical devices Shi-Hai Sun, Corresponding Author Shi-Hai Sun sunshh8@mail.sysu.edu.cn School of Electronics and Communication Engineering, Sun Yat-Sen University, Shenzhen, China Correspondence Shihai Sun, School of Electronics and Communication Engineering, Sun Yat-Sen University, Shenzhen, Guangdong 518100, China. Email: sunshh8@mail.sysu.edu.cnSearch for more papers by this authorGui-Lu Long, Gui-Lu Long Beijing Academy of Quantum Information Science, Beijing, China State Key Laboratory of Low-Dimensional Quantum Physics and Department of Physics, Tsinghua University, Beijing, China Beijing National Research Center for Information Science and Technology, Beijing, ChinaSearch for more papers by this author Shi-Hai Sun, Corresponding Author Shi-Hai Sun sunshh8@mail.sysu.edu.cn School of Electronics and Communication Engineering, Sun Yat-Sen University, Shenzhen, China Correspondence Shihai Sun, School of Electronics and Communication Engineering, Sun Yat-Sen University, Shenzhen, Guangdong 518100, China. Email: sunshh8@mail.sysu.edu.cnSearch for more papers by this authorGui-Lu Long, Gui-Lu Long Beijing Academy of Quantum Information Science, Beijing, China State Key Laboratory of Low-Dimensional Quantum Physics and Department of Physics, Tsinghua University, Beijing, China Beijing National Research Center for Information Science and Technology, Beijing, ChinaSearch for more papers by this author First published: 26 November 2021 https://doi.org/10.1002/que2.86Read 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 Deterministic secure quantum communication (DSQC) can transmit ciphered message with information theoretical security, in which the message is directly modulated on the quantum state and transmitted from Alice to Bob. Thus, key is not pre-shared, but rather communicated after the security of the ciphered message transmission is assured. In most of previous DSQC protocols, quantum memory or entanglement is necessary, which is still a big challenge with current technology. And the imperfections of practical devices, such as loss, weak coherent source, and so on, may also down play the security and efficiency of these DSQC protocols. In this article, a DSQC protocol with practical devices is proposed. In our protocol, both quantum memory and entanglement are not require. And DSQC with distance as long as 100–200 km and repetition as high as is possible. Open Research DATA AVAILABILITY STATEMENT The data that support the findings of this study are openly available in Shihai Sun with email sunshh8@mail.sysu.edu.cn Volume3, Issue4December 2021e86 RelatedInformation