dc.creatorWerlang, T
dc.creatorSouza, S
dc.creatorFanchini, FF
dc.creatorVillas-Boas, CJ
dc.date2009
dc.dateAUG
dc.date2014-07-30T18:28:12Z
dc.date2015-11-26T17:49:14Z
dc.date2014-07-30T18:28:12Z
dc.date2015-11-26T17:49:14Z
dc.date.accessioned2018-03-29T00:32:16Z
dc.date.available2018-03-29T00:32:16Z
dc.identifierPhysical Review A. Amer Physical Soc, v. 80, n. 2, 2009.
dc.identifier1050-2947
dc.identifierWOS:000269638200193
dc.identifier10.1103/PhysRevA.80.024103
dc.identifierhttp://www.repositorio.unicamp.br/jspui/handle/REPOSIP/71196
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/71196
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1289324
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.descriptionCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.descriptionWe calculate the dissipative dynamics of two-qubit quantum discord under Markovian environments. We analyze various dissipative channels such as dephasing, depolarizing, and generalized amplitude damping, assuming independent perturbation, in which each qubit is coupled to its own channel. Choosing initial conditions that manifest the so-called sudden death of entanglement, we compare the dynamics of entanglement with that of quantum discord. We show that in all cases where entanglement suddenly disappears, quantum discord vanishes only in the asymptotic limit, behaving similarly to individual decoherence of the qubits, even at finite temperatures. Hence, quantum discord is more robust than the entanglement against decoherence so that quantum algorithms based only on quantum discord correlations may be more robust than those based on entanglement.
dc.description80
dc.description2
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.descriptionCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.descriptionCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.languageen
dc.publisherAmer Physical Soc
dc.publisherCollege Pk
dc.publisherEUA
dc.relationPhysical Review A
dc.relationPhys. Rev. A
dc.rightsaberto
dc.rightshttp://publish.aps.org/authors/transfer-of-copyright-agreement
dc.sourceWeb of Science
dc.subjectEntanglement
dc.subjectDecoherence
dc.subjectState
dc.titleRobustness of quantum discord to sudden death
dc.typeArtículos de revistas


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