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Article: Experimental quantum key distribution with decoy states

TitleExperimental quantum key distribution with decoy states
Authors
Issue Date2006
Citation
Physical Review Letters, 2006, v. 96, n. 7, article no. 070502 How to Cite?
AbstractTo increase dramatically the distance and the secure key generation rate of quantum key distribution (QKD), the idea of quantum decoys-signals of different intensities-has recently been proposed. Here, we present the first experimental implementation of decoy state QKD. By making simple modifications to a commercial quantum key distribution system, we show that a secure key generation rate of 165bit/s, which is 1/4 of the theoretical limit, can be obtained over 15 km of a telecommunication fiber. We also show that with the same experimental parameters, not even a single bit of secure key can be extracted with a non-decoy-state protocol. Compared to building single photon sources, decoy state QKD is a much simpler method for increasing the distance and key generation rate of unconditionally secure QKD. © 2006 The American Physical Society.
Persistent Identifierhttp://hdl.handle.net/10722/285524
ISSN
2020 Impact Factor: 9.161
2020 SCImago Journal Rankings: 3.688
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorZhao, Yi-
dc.contributor.authorQi, Bing-
dc.contributor.authorMa, Xiongfeng-
dc.contributor.authorLo, Hoi Kwong-
dc.contributor.authorQian, Li-
dc.date.accessioned2020-08-18T04:55:58Z-
dc.date.available2020-08-18T04:55:58Z-
dc.date.issued2006-
dc.identifier.citationPhysical Review Letters, 2006, v. 96, n. 7, article no. 070502-
dc.identifier.issn0031-9007-
dc.identifier.urihttp://hdl.handle.net/10722/285524-
dc.description.abstractTo increase dramatically the distance and the secure key generation rate of quantum key distribution (QKD), the idea of quantum decoys-signals of different intensities-has recently been proposed. Here, we present the first experimental implementation of decoy state QKD. By making simple modifications to a commercial quantum key distribution system, we show that a secure key generation rate of 165bit/s, which is 1/4 of the theoretical limit, can be obtained over 15 km of a telecommunication fiber. We also show that with the same experimental parameters, not even a single bit of secure key can be extracted with a non-decoy-state protocol. Compared to building single photon sources, decoy state QKD is a much simpler method for increasing the distance and key generation rate of unconditionally secure QKD. © 2006 The American Physical Society.-
dc.languageeng-
dc.relation.ispartofPhysical Review Letters-
dc.titleExperimental quantum key distribution with decoy states-
dc.typeArticle-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1103/PhysRevLett.96.070502-
dc.identifier.scopuseid_2-s2.0-33344454530-
dc.identifier.volume96-
dc.identifier.issue7-
dc.identifier.spagearticle no. 070502-
dc.identifier.epagearticle no. 070502-
dc.identifier.eissn1079-7114-
dc.identifier.isiWOS:000235554100006-
dc.identifier.issnl0031-9007-

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