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Article: Memory effects in quantum channel discrimination

TitleMemory effects in quantum channel discrimination
Authors
Issue Date2008
Citation
Physical Review Letters, 2008, v. 101, n. 18 How to Cite?
AbstractWe consider quantum-memory assisted protocols for discriminating quantum channels. We show that for optimal discrimination of memory channels, memory assisted protocols are needed. This leads to a new notion of distance for channels with memory, based on the general theory of quantum testers. For discrimination and estimation of sets of independent unitary channels, we prove optimality of parallel protocols among all possible architectures. © 2008 The American Physical Society.
Persistent Identifierhttp://hdl.handle.net/10722/213020
ISSN
2015 Impact Factor: 7.645
2015 SCImago Journal Rankings: 3.731
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorChiribella, Giulio-
dc.contributor.authorD'Ariano, Giacomo M.-
dc.contributor.authorPerinotti, Paolo-
dc.date.accessioned2015-07-28T04:05:47Z-
dc.date.available2015-07-28T04:05:47Z-
dc.date.issued2008-
dc.identifier.citationPhysical Review Letters, 2008, v. 101, n. 18-
dc.identifier.issn0031-9007-
dc.identifier.urihttp://hdl.handle.net/10722/213020-
dc.description.abstractWe consider quantum-memory assisted protocols for discriminating quantum channels. We show that for optimal discrimination of memory channels, memory assisted protocols are needed. This leads to a new notion of distance for channels with memory, based on the general theory of quantum testers. For discrimination and estimation of sets of independent unitary channels, we prove optimality of parallel protocols among all possible architectures. © 2008 The American Physical Society.-
dc.languageeng-
dc.relation.ispartofPhysical Review Letters-
dc.titleMemory effects in quantum channel discrimination-
dc.typeArticle-
dc.description.natureLink_to_subscribed_fulltext-
dc.identifier.doi10.1103/PhysRevLett.101.180501-
dc.identifier.scopuseid_2-s2.0-55149086577-
dc.identifier.volume101-
dc.identifier.issue18-
dc.identifier.eissn1079-7114-
dc.identifier.isiWOS:000260574600007-

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