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Implementation and security analysis of practical quantum secure direct communication
Rapid development of supercomputers and the prospect of quantum computers are posing increasingly serious threats to the security of communication. Using the principles of quantum mechanics, quantum communication offers provable security of communication and is a promising solution to counter such t...
Autores principales: | , , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group UK
2019
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6363753/ https://www.ncbi.nlm.nih.gov/pubmed/30728960 http://dx.doi.org/10.1038/s41377-019-0132-3 |
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author | Qi, Ruoyang Sun, Zhen Lin, Zaisheng Niu, Penghao Hao, Wentao Song, Liyuan Huang, Qin Gao, Jiancun Yin, Liuguo Long, Gui-Lu |
author_facet | Qi, Ruoyang Sun, Zhen Lin, Zaisheng Niu, Penghao Hao, Wentao Song, Liyuan Huang, Qin Gao, Jiancun Yin, Liuguo Long, Gui-Lu |
author_sort | Qi, Ruoyang |
collection | PubMed |
description | Rapid development of supercomputers and the prospect of quantum computers are posing increasingly serious threats to the security of communication. Using the principles of quantum mechanics, quantum communication offers provable security of communication and is a promising solution to counter such threats. Quantum secure direct communication (QSDC) is one important branch of quantum communication. In contrast to other branches of quantum communication, it transmits secret information directly. Recently, remarkable progress has been made in proof-of-principle experimental demonstrations of QSDC. However, it remains a technical feat to bring QSDC into a practical application. Here, we report the implementation of a practical quantum secure communication system. The security is analyzed in the Wyner wiretap channel theory. The system uses a coding scheme of concatenation of low-density parity-check (LDPC) codes and works in a regime with a realistic environment of high noise and high loss. The present system operates with a repetition rate of 1 MHz at a distance of 1.5 kilometers. The secure communication rate is 50 bps, sufficient to effectively send text messages and reasonably sized files of images and sounds. |
format | Online Article Text |
id | pubmed-6363753 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2019 |
publisher | Nature Publishing Group UK |
record_format | MEDLINE/PubMed |
spelling | pubmed-63637532019-02-06 Implementation and security analysis of practical quantum secure direct communication Qi, Ruoyang Sun, Zhen Lin, Zaisheng Niu, Penghao Hao, Wentao Song, Liyuan Huang, Qin Gao, Jiancun Yin, Liuguo Long, Gui-Lu Light Sci Appl Article Rapid development of supercomputers and the prospect of quantum computers are posing increasingly serious threats to the security of communication. Using the principles of quantum mechanics, quantum communication offers provable security of communication and is a promising solution to counter such threats. Quantum secure direct communication (QSDC) is one important branch of quantum communication. In contrast to other branches of quantum communication, it transmits secret information directly. Recently, remarkable progress has been made in proof-of-principle experimental demonstrations of QSDC. However, it remains a technical feat to bring QSDC into a practical application. Here, we report the implementation of a practical quantum secure communication system. The security is analyzed in the Wyner wiretap channel theory. The system uses a coding scheme of concatenation of low-density parity-check (LDPC) codes and works in a regime with a realistic environment of high noise and high loss. The present system operates with a repetition rate of 1 MHz at a distance of 1.5 kilometers. The secure communication rate is 50 bps, sufficient to effectively send text messages and reasonably sized files of images and sounds. Nature Publishing Group UK 2019-02-06 /pmc/articles/PMC6363753/ /pubmed/30728960 http://dx.doi.org/10.1038/s41377-019-0132-3 Text en © The Author(s) 2019 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/. |
spellingShingle | Article Qi, Ruoyang Sun, Zhen Lin, Zaisheng Niu, Penghao Hao, Wentao Song, Liyuan Huang, Qin Gao, Jiancun Yin, Liuguo Long, Gui-Lu Implementation and security analysis of practical quantum secure direct communication |
title | Implementation and security analysis of practical quantum secure direct communication |
title_full | Implementation and security analysis of practical quantum secure direct communication |
title_fullStr | Implementation and security analysis of practical quantum secure direct communication |
title_full_unstemmed | Implementation and security analysis of practical quantum secure direct communication |
title_short | Implementation and security analysis of practical quantum secure direct communication |
title_sort | implementation and security analysis of practical quantum secure direct communication |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6363753/ https://www.ncbi.nlm.nih.gov/pubmed/30728960 http://dx.doi.org/10.1038/s41377-019-0132-3 |
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