Optimal measurement preserving qubit channels

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dc.contributor.authorKechrimparis, Spirosko
dc.contributor.authorBae, Joonwooko
dc.date.accessioned2021-03-08T04:50:06Z-
dc.date.available2021-03-08T04:50:06Z-
dc.date.created2021-03-08-
dc.date.created2021-03-08-
dc.date.created2021-03-08-
dc.date.created2021-03-08-
dc.date.issued2020-12-
dc.identifier.citationNEW JOURNAL OF PHYSICS, v.22, no.12-
dc.identifier.issn1367-2630-
dc.identifier.urihttp://hdl.handle.net/10203/281337-
dc.description.abstractWe consider the problem of discriminating qubit states that are sent over a quantum channel and derive a necessary and sufficient condition for an optimal measurement to be preserved by the channel. We apply the result to the characterization of optimal measurement preserving (OMP) channels for a given qubit ensemble, e.g., a set of two states or a set of multiple qubit states with equal a priori probabilities. Conversely, we also characterize qubit ensembles for which a given channel is OMP, such as unitary and depolarization channels. Finally, we show how the sets of OMP channels for a given ensemble can be constructed.-
dc.languageEnglish-
dc.publisherIOP PUBLISHING LTD-
dc.titleOptimal measurement preserving qubit channels-
dc.typeArticle-
dc.identifier.wosid000621483300001-
dc.identifier.scopusid2-s2.0-85099351451-
dc.type.rimsART-
dc.citation.volume22-
dc.citation.issue12-
dc.citation.publicationnameNEW JOURNAL OF PHYSICS-
dc.identifier.doi10.1088/1367-2630/abcc9b-
dc.contributor.localauthorBae, Joonwoo-
dc.contributor.nonIdAuthorKechrimparis, Spiros-
dc.description.isOpenAccessY-
dc.type.journalArticleArticle-
dc.subject.keywordAuthorquantum state discrimination-
dc.subject.keywordAuthorquantum channels-
dc.subject.keywordAuthoroptimal measurement preserving channels-
dc.subject.keywordAuthorquantum measurements-
dc.subject.keywordAuthorquantum communication-
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