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Article: Unconditionally secure key distribution in higher dimensions by depolarization

TitleUnconditionally secure key distribution in higher dimensions by depolarization
Authors
KeywordsDepolarization
Entanglement purification
Local quantum operation
Pauli error
Phase error correction
Quantum key distribution
Shor-Preskill proof
Two-way classical communication
Unconditional security
Issue Date2005
PublisherI E E E. The Journal's web site is located at http://ieeexplore.ieee.org/xpl/RecentIssue.jsp?puNumber=18
Citation
Ieee Transactions On Information Theory, 2005, v. 51 n. 4, p. 1451-1468 How to Cite?
AbstractThis paper presents a prepare-and-measure scheme using N-dimensional quantum particles as information carriers where N is a prime power. One of the key ingredients used to resist eavesdropping in this scheme is to depolarize all Pauli errors introduced to the quantum information carriers. Using the Shor-Preskill-type argument, we prove that this scheme is unconditionally secure against all attacks allowed by the laws of quantum physics. For N = 2n > 2, each information carrier can be replaced by n entangled qubits. In this case, there is a family of eavesdropping attacks on which no unentangled-qubit-based prepare-and-measure (PM) quantum key distribution scheme known to date can generate a provably secure key. In contrast, under the same family of attacks, our entangled-qubit-based scheme remains secure whenever 2n ≥ 4. This demonstrates the advantage of using entangled particles as information carriers and of using depolarization of Pauli errors to combat eavesdropping attacks more drastic than those that can be handled by unentangled-qubit-based prepare-and-measure schemes. © 2005 IEEE.
Persistent Identifierhttp://hdl.handle.net/10722/43470
ISSN
2015 Impact Factor: 1.737
2015 SCImago Journal Rankings: 1.433
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorChau, HFen_HK
dc.date.accessioned2007-03-23T04:46:19Z-
dc.date.available2007-03-23T04:46:19Z-
dc.date.issued2005en_HK
dc.identifier.citationIeee Transactions On Information Theory, 2005, v. 51 n. 4, p. 1451-1468en_HK
dc.identifier.issn0018-9448en_HK
dc.identifier.urihttp://hdl.handle.net/10722/43470-
dc.description.abstractThis paper presents a prepare-and-measure scheme using N-dimensional quantum particles as information carriers where N is a prime power. One of the key ingredients used to resist eavesdropping in this scheme is to depolarize all Pauli errors introduced to the quantum information carriers. Using the Shor-Preskill-type argument, we prove that this scheme is unconditionally secure against all attacks allowed by the laws of quantum physics. For N = 2n > 2, each information carrier can be replaced by n entangled qubits. In this case, there is a family of eavesdropping attacks on which no unentangled-qubit-based prepare-and-measure (PM) quantum key distribution scheme known to date can generate a provably secure key. In contrast, under the same family of attacks, our entangled-qubit-based scheme remains secure whenever 2n ≥ 4. This demonstrates the advantage of using entangled particles as information carriers and of using depolarization of Pauli errors to combat eavesdropping attacks more drastic than those that can be handled by unentangled-qubit-based prepare-and-measure schemes. © 2005 IEEE.en_HK
dc.format.extent453316 bytes-
dc.format.extent28160 bytes-
dc.format.mimetypeapplication/pdf-
dc.format.mimetypeapplication/msword-
dc.languageengen_HK
dc.publisherI E E E. The Journal's web site is located at http://ieeexplore.ieee.org/xpl/RecentIssue.jsp?puNumber=18en_HK
dc.relation.ispartofIEEE Transactions on Information Theoryen_HK
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.rights©2005 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.en_HK
dc.subjectDepolarizationen_HK
dc.subjectEntanglement purificationen_HK
dc.subjectLocal quantum operationen_HK
dc.subjectPauli erroren_HK
dc.subjectPhase error correctionen_HK
dc.subjectQuantum key distributionen_HK
dc.subjectShor-Preskill proofen_HK
dc.subjectTwo-way classical communicationen_HK
dc.subjectUnconditional securityen_HK
dc.titleUnconditionally secure key distribution in higher dimensions by depolarizationen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0018-9448&volume=51&issue=4&spage=1451&epage=1468&date=2005&atitle=Unconditionally+secure+key+distribution+in+higher+dimensions+by+depolarizationen_HK
dc.identifier.emailChau, HF: hfchau@hku.hken_HK
dc.identifier.authorityChau, HF=rp00669en_HK
dc.description.naturepublished_or_final_versionen_HK
dc.identifier.doi10.1109/TIT.2005.844076en_HK
dc.identifier.scopuseid_2-s2.0-17744365422en_HK
dc.identifier.hkuros98060-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-17744365422&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume51en_HK
dc.identifier.issue4en_HK
dc.identifier.spage1451en_HK
dc.identifier.epage1468en_HK
dc.identifier.isiWOS:000228050800014-
dc.publisher.placeUnited Statesen_HK
dc.identifier.scopusauthoridChau, HF=7005742276en_HK

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