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Article: Experimental Demonstration of High-Rate Measurement-Device-Independent Quantum Key Distribution over Asymmetric Channels

TitleExperimental Demonstration of High-Rate Measurement-Device-Independent Quantum Key Distribution over Asymmetric Channels
Authors
Issue Date2019
Citation
Physical Review Letters, 2019, v. 122, n. 16, article no. 160501 How to Cite?
Abstract© 2019 American Physical Society. Measurement-device-independent quantum key distribution (MDI-QKD) can eliminate all detector side channels and it is practical with current technology. Previous implementations of MDI-QKD all used two symmetric channels with similar losses. However, the secret key rate is severely limited when different channels have different losses. Here we report the results of the first high-rate MDI-QKD experiment over asymmetric channels. By using the recent 7-intensity optimization approach, we demonstrate>10×higher key rate than the previous best-known protocols for MDI-QKD in the situation of large channel asymmetry, and extend the secure transmission distance by more than 20-50 km in standard telecom fiber. The results have moved MDI-QKD towards widespread applications in practical network settings, where the channel losses are asymmetric and user nodes could be dynamically added or deleted.
DescriptionAccepted manuscript is available on the publisher website.
Persistent Identifierhttp://hdl.handle.net/10722/285966
ISSN
2020 Impact Factor: 9.161
2020 SCImago Journal Rankings: 3.688
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorLiu, Hui-
dc.contributor.authorWang, Wenyuan-
dc.contributor.authorWei, Kejin-
dc.contributor.authorFang, Xiao Tian-
dc.contributor.authorLi, Li-
dc.contributor.authorLiu, Nai Le-
dc.contributor.authorLiang, Hao-
dc.contributor.authorZhang, Si Jie-
dc.contributor.authorZhang, Weijun-
dc.contributor.authorLi, Hao-
dc.contributor.authorYou, Lixing-
dc.contributor.authorWang, Zhen-
dc.contributor.authorLo, Hoi Kwong-
dc.contributor.authorChen, Teng Yun-
dc.contributor.authorXu, Feihu-
dc.contributor.authorPan, Jian Wei-
dc.date.accessioned2020-08-18T04:57:07Z-
dc.date.available2020-08-18T04:57:07Z-
dc.date.issued2019-
dc.identifier.citationPhysical Review Letters, 2019, v. 122, n. 16, article no. 160501-
dc.identifier.issn0031-9007-
dc.identifier.urihttp://hdl.handle.net/10722/285966-
dc.descriptionAccepted manuscript is available on the publisher website.-
dc.description.abstract© 2019 American Physical Society. Measurement-device-independent quantum key distribution (MDI-QKD) can eliminate all detector side channels and it is practical with current technology. Previous implementations of MDI-QKD all used two symmetric channels with similar losses. However, the secret key rate is severely limited when different channels have different losses. Here we report the results of the first high-rate MDI-QKD experiment over asymmetric channels. By using the recent 7-intensity optimization approach, we demonstrate>10×higher key rate than the previous best-known protocols for MDI-QKD in the situation of large channel asymmetry, and extend the secure transmission distance by more than 20-50 km in standard telecom fiber. The results have moved MDI-QKD towards widespread applications in practical network settings, where the channel losses are asymmetric and user nodes could be dynamically added or deleted.-
dc.languageeng-
dc.relation.ispartofPhysical Review Letters-
dc.titleExperimental Demonstration of High-Rate Measurement-Device-Independent Quantum Key Distribution over Asymmetric Channels-
dc.typeArticle-
dc.description.naturelink_to_OA_fulltext-
dc.identifier.doi10.1103/PhysRevLett.122.160501-
dc.identifier.pmid31075015-
dc.identifier.scopuseid_2-s2.0-85065131731-
dc.identifier.volume122-
dc.identifier.issue16-
dc.identifier.spagearticle no. 160501-
dc.identifier.epagearticle no. 160501-
dc.identifier.eissn1079-7114-
dc.identifier.isiWOS:000466441100001-
dc.identifier.issnl0031-9007-

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