Quantum discord, thermal discord, and entropy generation in the minimum error discrimination strategy

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dc.creatorOmar Alejandro Jiménez Henríquez
dc.creatorMiguel Ángel Solís Prosser
dc.creatorLeonardo Teixeira Neves
dc.creatorAldo Patricio Delgado Hidalgo
dc.date.accessioned2025-02-25T12:52:00Z
dc.date.accessioned2025-09-08T23:54:03Z
dc.date.available2025-02-25T12:52:00Z
dc.date.issued2019
dc.format.mimetypepdf
dc.identifier.doihttps://doi.org/10.3390/e21030263
dc.identifier.issn1099-4300
dc.identifier.urihttps://hdl.handle.net/1843/80403
dc.languageeng
dc.publisherUniversidade Federal de Minas Gerais
dc.relation.ispartofEntropy
dc.rightsAcesso Restrito
dc.subjectTermodinâmica
dc.subject.otherMinimum error discrimination
dc.subject.otherAccessible information
dc.subject.otherDiscord
dc.subject.otherSecond law of thermodynamics
dc.titleQuantum discord, thermal discord, and entropy generation in the minimum error discrimination strategy
dc.typeArtigo de periódico
local.citation.epage12
local.citation.issue3
local.citation.spage1
local.citation.volume21
local.description.resumoWe study the classical and quantum correlations in the minimum error discrimination (ME) of two non-orthogonal pure quantum states. In particular, we consider quantum discord, thermal discord and entropy generation. We show that ME allows one to reach the accessible information between the two involved parties, Alice and Bob, in the discrimination process. We determine the amount of quantum discord that is consumed in the ME and show that the entropy generation is, in general, higher than the thermal discord. However, in certain cases the entropy generation is very close to thermal discord, which indicates that, in these cases, the process generates the least possible entropy. Moreover, we also study the ME process as a thermodynamic cycle and we show that it is in agreement with the second law of thermodynamics. Finally, we study the relation between the accessible information and the optimum success probability in ME.
local.identifier.orcidhttps://orcid.org/0009-0000-4557-9472
local.identifier.orcidhttps://orcid.org/0000-0002-2856-441X
local.identifier.orcidhttps://orcid.org/0000-0002-9589-1939
local.identifier.orcidhttps://orcid.org/0000-0002-8968-5733
local.publisher.countryBrasil
local.publisher.departmentICX - DEPARTAMENTO DE FÍSICA
local.publisher.initialsUFMG
local.url.externahttps://www.mdpi.com/1099-4300/21/3/263

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