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Security of quantum key distribution with multiphoton components
Most qubit-based quantum key distribution (QKD) protocols extract the secure key merely from single-photon component of the attenuated lasers. However, with the Scarani-Acin-Ribordy-Gisin 2004 (SARG04) QKD protocol, the unconditionally secure key can be extracted from the two-photon component by mod...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group
2016
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4935864/ https://www.ncbi.nlm.nih.gov/pubmed/27383014 http://dx.doi.org/10.1038/srep29482 |
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author | Yin, Hua-Lei Fu, Yao Mao, Yingqiu Chen, Zeng-Bing |
author_facet | Yin, Hua-Lei Fu, Yao Mao, Yingqiu Chen, Zeng-Bing |
author_sort | Yin, Hua-Lei |
collection | PubMed |
description | Most qubit-based quantum key distribution (QKD) protocols extract the secure key merely from single-photon component of the attenuated lasers. However, with the Scarani-Acin-Ribordy-Gisin 2004 (SARG04) QKD protocol, the unconditionally secure key can be extracted from the two-photon component by modifying the classical post-processing procedure in the BB84 protocol. Employing the merits of SARG04 QKD protocol and six-state preparation, one can extract secure key from the components of single photon up to four photons. In this paper, we provide the exact relations between the secure key rate and the bit error rate in a six-state SARG04 protocol with single-photon, two-photon, three-photon, and four-photon sources. By restricting the mutual information between the phase error and bit error, we obtain a higher secure bit error rate threshold of the multiphoton components than previous works. Besides, we compare the performances of the six-state SARG04 with other prepare-and-measure QKD protocols using decoy states. |
format | Online Article Text |
id | pubmed-4935864 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2016 |
publisher | Nature Publishing Group |
record_format | MEDLINE/PubMed |
spelling | pubmed-49358642016-07-08 Security of quantum key distribution with multiphoton components Yin, Hua-Lei Fu, Yao Mao, Yingqiu Chen, Zeng-Bing Sci Rep Article Most qubit-based quantum key distribution (QKD) protocols extract the secure key merely from single-photon component of the attenuated lasers. However, with the Scarani-Acin-Ribordy-Gisin 2004 (SARG04) QKD protocol, the unconditionally secure key can be extracted from the two-photon component by modifying the classical post-processing procedure in the BB84 protocol. Employing the merits of SARG04 QKD protocol and six-state preparation, one can extract secure key from the components of single photon up to four photons. In this paper, we provide the exact relations between the secure key rate and the bit error rate in a six-state SARG04 protocol with single-photon, two-photon, three-photon, and four-photon sources. By restricting the mutual information between the phase error and bit error, we obtain a higher secure bit error rate threshold of the multiphoton components than previous works. Besides, we compare the performances of the six-state SARG04 with other prepare-and-measure QKD protocols using decoy states. Nature Publishing Group 2016-07-07 /pmc/articles/PMC4935864/ /pubmed/27383014 http://dx.doi.org/10.1038/srep29482 Text en Copyright © 2016, Macmillan Publishers Limited http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ |
spellingShingle | Article Yin, Hua-Lei Fu, Yao Mao, Yingqiu Chen, Zeng-Bing Security of quantum key distribution with multiphoton components |
title | Security of quantum key distribution with multiphoton components |
title_full | Security of quantum key distribution with multiphoton components |
title_fullStr | Security of quantum key distribution with multiphoton components |
title_full_unstemmed | Security of quantum key distribution with multiphoton components |
title_short | Security of quantum key distribution with multiphoton components |
title_sort | security of quantum key distribution with multiphoton components |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4935864/ https://www.ncbi.nlm.nih.gov/pubmed/27383014 http://dx.doi.org/10.1038/srep29482 |
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