Coarse graining a non-Markovian collisional model

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dc.creatorNadja Kolb Bernardes
dc.creatorAndre Ricardo Ribeiro de Carvalho
dc.creatorCarlos Henrique Monken
dc.creatorMarcelo Paleologo Elefteriadis de França Santos
dc.date.accessioned2022-10-27T12:41:29Z
dc.date.accessioned2025-09-09T00:56:50Z
dc.date.available2022-10-27T12:41:29Z
dc.date.issued2017-03-16
dc.description.sponsorshipCNPq - Conselho Nacional de Desenvolvimento Científico e Tecnológico
dc.description.sponsorshipCNPq - Conselho Nacional de Desenvolvimento Científico e Tecnológico
dc.description.sponsorshipFAPEMIG - Fundação de Amparo à Pesquisa do Estado de Minas Gerais
dc.description.sponsorshipFAPEMIG - Fundação de Amparo à Pesquisa do Estado de Minas Gerais
dc.description.sponsorshipCAPES - Coordenação de Aperfeiçoamento de Pessoal de Nível Superior
dc.description.sponsorshipCAPES - Coordenação de Aperfeiçoamento de Pessoal de Nível Superior
dc.description.sponsorshipINCT – Instituto nacional de ciência e tecnologia (Antigo Instituto do Milênio)
dc.description.sponsorshipINCT – Instituto nacional de ciência e tecnologia (Antigo Instituto do Milênio)
dc.identifier.doihttps://doi.org/10.1103/PhysRevA.95.032117
dc.identifier.issn24699934
dc.identifier.urihttps://hdl.handle.net/1843/46676
dc.languageeng
dc.publisherUniversidade Federal de Minas Gerais
dc.relation.ispartofPhysical Review A
dc.rightsAcesso Restrito
dc.subjectMecânica quântica
dc.subjectProcessos não-Markovianos
dc.subject.otherQuantum mechanics
dc.subject.otherNon-Markovian processes
dc.titleCoarse graining a non-Markovian collisional model
dc.typeArtigo de periódico
local.citation.epage032117-6
local.citation.issue3
local.citation.spage032117-1
local.citation.volume95
local.description.resumoThe dynamics of systems subjected to noise is called Markovian in the absence of memory effects, i.e., when its immediate future depends only on its present. Time correlations in the noise source may generate non-Markovian effects that, sometimes, can be erased by appropriately coarse graining the time evolution of the system. In general, the coarse-graining time tCG is taken to be much larger than the correlation time τ but no direct relation between them is established. Here we analytically obtain a relation between tCG and τ for the dynamics of a qubit subjected to a time-correlated environment. Our results can be applied in principle to any distribution of the environmental correlations and can be tested through a collisional model where the qubit sequentially interacts with correlated qutrits.
local.identifier.orcidhttps://orcid.org/0000-0001-6307-411X
local.identifier.orcidhttps://orcid.org/0000-0002-0064-1882
local.publisher.countryBrasil
local.publisher.departmentICX - DEPARTAMENTO DE FÍSICA
local.publisher.initialsUFMG
local.url.externahttps://journals.aps.org/pra/abstract/10.1103/PhysRevA.95.032117

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