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Publicação:
Shielding quantum discord through continuous dynamical decoupling

dc.contributor.authorFanchini, Felipe Fernandes [UNESP]
dc.contributor.authorLima, Emanuel F. de [UNESP]
dc.contributor.authorCastelano, Leonardo K.
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniversidade Federal de São Carlos (UFSCar)
dc.date.accessioned2014-05-20T15:34:14Z
dc.date.available2014-05-20T15:34:14Z
dc.date.issued2012-11-06
dc.description.abstractThis work investigates the use of dynamical decoupling to shield quantum discord from errors introduced by the environment. Specifically, a two-qubit system interacting with independent baths of bosons is considered. The initial conditions of the system were chosen as pure and mixed states, while the dynamical decoupling was achieved by means of continuous fields. The effect of the temperature on the shielding of quantum discord is also studied. It is shown that although the quantum discord for particular initial states may be perfectly preserved over some finite time window in the absence of any protective field, the effectiveness of the dynamical decoupling with continuous fields depends essentially on the time scale required to preserve quantum discord. It is also shown that for these particular initial states the time for which the shielding of the quantum discord becomes effective decreases as the temperature increases.en
dc.description.affiliationUNESP Univ Estadual Paulista, Fac Ciencias, BR-17033360 São Paulo, Brazil
dc.description.affiliationUNESP Univ Estadual Paulista, Inst Geociencias & Ciencias Exatas, BR-13506900 São Paulo, Brazil
dc.description.affiliationUniv Fed Sao Carlos, Dept Fis, BR-13565905 São Paulo, Brazil
dc.description.affiliationUnespUNESP Univ Estadual Paulista, Fac Ciencias, BR-17033360 São Paulo, Brazil
dc.description.affiliationUnespUNESP Univ Estadual Paulista, Inst Geociencias & Ciencias Exatas, BR-13506900 São Paulo, Brazil
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.format.extent7
dc.identifierhttp://dx.doi.org/10.1103/PhysRevA.86.052310
dc.identifier.citationPhysical Review A. College Pk: Amer Physical Soc, v. 86, n. 5, p. 7, 2012.
dc.identifier.doi10.1103/PhysRevA.86.052310
dc.identifier.fileWOS000310838000005.pdf
dc.identifier.issn1050-2947
dc.identifier.lattes8884890472193474
dc.identifier.orcid0000-0003-3297-905X
dc.identifier.urihttp://hdl.handle.net/11449/42468
dc.identifier.wosWOS:000310838000005
dc.language.isoeng
dc.publisherAmer Physical Soc
dc.relation.isnodouble229395*
dc.relation.ispartofPhysical Review A
dc.relation.ispartofsjr1,288
dc.rights.accessRightsAcesso aberto
dc.sourceWeb of Science
dc.titleShielding quantum discord through continuous dynamical decouplingen
dc.typeArtigo
dcterms.licensehttp://publish.aps.org/authors/transfer-of-copyright-agreement
dcterms.rightsHolderAmer Physical Soc
dspace.entity.typePublication
unesp.author.lattes8884890472193474[1]
unesp.author.orcid0000-0003-3297-905X[1]
unesp.campusUniversidade Estadual Paulista (UNESP), Faculdade de Ciências, Baurupt
unesp.departmentFísica - FCpt

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