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Article: Chau–Wang–Wong17 scheme is experimentally more feasible than the six-state scheme

TitleChau–Wang–Wong17 scheme is experimentally more feasible than the six-state scheme
Authors
KeywordsQuantum key distribution
Chau–Wang–Wong17 scheme
Time-bin representation
Secret key rate
Issue Date2019
PublisherSpringer New York LLC. The Journal's web site is located at http://springerlink.metapress.com/openurl.asp?genre=journal&issn=1570-0755
Citation
Quantum Information Processing, 2019, v. 18 n. 5, article no. 138, p. 1-12 How to Cite?
AbstractRecently, Chau et al. (Phys Rev A 95:022311, 2017) reported a quantum key distribution (QKD) scheme using four-dimensional qudits. Surprisingly, as a function of the bit error rate of the raw key, the secret key rate of this scheme is equal to that of the (qubit-based) six-state scheme under one-way classical communication using ideal apparatus in the limit of arbitrarily long raw key length. Here, we explain why this is the case in spite of the fact that these two schemes are not linearly related to each other. More importantly, we find that in terms of the four-dimensional dit error rate of the raw key, the Chau et al.’s scheme can tolerate up to 21.6% using one-way classical communications, which is better than the Sheridan and Scarani’s scheme (Phys Rev A 82:030301(R), 2010). In addition, we argue the experimental advantages of the Chau et al. implementation over the standard six-state scheme and report a corresponding proof-of-principle experiment using passive basis selection with decoy states. We also compare our experiment with the recent high secret key rate implementation of the Sheridan and Scarani’s scheme by Islam et al. (Sci Adv 3:e1701491, 2017).
Persistent Identifierhttp://hdl.handle.net/10722/269558
ISSN
2017 Impact Factor: 2.283
2015 SCImago Journal Rankings: 0.628
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorChau, HF-
dc.contributor.authorYin, ZQ-
dc.contributor.authorWang, S-
dc.contributor.authorChen, W-
dc.contributor.authorHan, ZF-
dc.date.accessioned2019-04-24T08:10:09Z-
dc.date.available2019-04-24T08:10:09Z-
dc.date.issued2019-
dc.identifier.citationQuantum Information Processing, 2019, v. 18 n. 5, article no. 138, p. 1-12-
dc.identifier.issn1570-0755-
dc.identifier.urihttp://hdl.handle.net/10722/269558-
dc.description.abstractRecently, Chau et al. (Phys Rev A 95:022311, 2017) reported a quantum key distribution (QKD) scheme using four-dimensional qudits. Surprisingly, as a function of the bit error rate of the raw key, the secret key rate of this scheme is equal to that of the (qubit-based) six-state scheme under one-way classical communication using ideal apparatus in the limit of arbitrarily long raw key length. Here, we explain why this is the case in spite of the fact that these two schemes are not linearly related to each other. More importantly, we find that in terms of the four-dimensional dit error rate of the raw key, the Chau et al.’s scheme can tolerate up to 21.6% using one-way classical communications, which is better than the Sheridan and Scarani’s scheme (Phys Rev A 82:030301(R), 2010). In addition, we argue the experimental advantages of the Chau et al. implementation over the standard six-state scheme and report a corresponding proof-of-principle experiment using passive basis selection with decoy states. We also compare our experiment with the recent high secret key rate implementation of the Sheridan and Scarani’s scheme by Islam et al. (Sci Adv 3:e1701491, 2017).-
dc.languageeng-
dc.publisherSpringer New York LLC. The Journal's web site is located at http://springerlink.metapress.com/openurl.asp?genre=journal&issn=1570-0755-
dc.relation.ispartofQuantum Information Processing-
dc.rightsThe final publication is available at Springer via http://dx.doi.org/10.1007/s11128-019-2263-0-
dc.subjectQuantum key distribution-
dc.subjectChau–Wang–Wong17 scheme-
dc.subjectTime-bin representation-
dc.subjectSecret key rate-
dc.titleChau–Wang–Wong17 scheme is experimentally more feasible than the six-state scheme-
dc.typeArticle-
dc.identifier.emailChau, HF: hfchau@hku.hk-
dc.identifier.authorityChau, HF=rp00669-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1007/s11128-019-2263-0-
dc.identifier.scopuseid_2-s2.0-85063592030-
dc.identifier.hkuros297424-
dc.identifier.volume18-
dc.identifier.issue5-
dc.identifier.spagearticle no. 138, p. 1-
dc.identifier.epagearticle no. 138, p. 12-
dc.identifier.isiWOS:000462665800001-
dc.publisher.placeUnited States-

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