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dc.contributor.authorFanchini, Felipe Fernandes-
dc.contributor.authorNapolitano, Reginaldo de Jesus-
dc.contributor.authorCakmak, Baris-
dc.contributor.authorCaldeira, Amir Ordacgi-
dc.identifier.citationPhysical Review. A, v. 91, p. 1-8, 2015.-
dc.description.abstractWe study the occurrence of errors in a continuously decoupled two-qubit state during a √SWAP quantum operation under decoherence. We consider a realization of this quantum gate based on the Heisenberg exchange interaction, which alone suffices for achieving universal quantum computation. Furthermore, we introduce a continuous-dynamical-decoupling scheme that commutes with the Heisenberg Hamiltonian to protect it from the amplitude damping and dephasing errors caused by the system-environment interaction. We consider two error-protection settings. One protects the qubits from both amplitude damping and dephasing errors. The other features the amplitude damping as a residual error and protects the qubits from dephasing errors only. In both settings, we investigate the interaction of qubits with common and independent environments separately. We study how errors affect the entanglement and fidelity for different environmental spectral densities.en
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)-
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)-
dc.description.sponsorshipInstituto Nacional de Ciência e Tecnologia em Informação Quântica (INCT-IQ)-
dc.publisherAmerican Physical Society-
dc.sourceCurrículo Lattes-
dc.titleProtecting the √SWAP operation from general and residual errors by continuous dynamical decouplingen
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)-
dc.contributor.institutionUniversidade de São Paulo (USP)-
dc.contributor.institutionUniversidade Estadual de Campinas (UNICAMP)-
dc.description.affiliationUniversidade Estadual Paulista Júlio de Mesquita Filho (UNESP), Faculdade de Ciências (FC), Departamento de Física, Bauru, SP, Brasil-
dc.description.affiliationUniversidade de São Paulo (USP), Instituto de Física de São Carlos (IFSC), São Carlos, SP, Brasil-
dc.description.affiliationUniversidade Estadual de Campinas (UNICAMP), Instituto de Física Gleb Wataghin, Campinas, SP, Brasil-
dc.description.affiliationUnespUniversidade Estadual Paulista Júlio de Mesquita Filho (UNESP), Faculdade de Ciências (FC), Departamento de Física, Bauru, SP, Brasil-
dc.description.sponsorshipIdFAPESP: 2012/50464-0-
dc.description.sponsorshipIdFAPESP: 2014/21792-5-
dc.rights.accessRightsAcesso restrito-
dc.relation.ispartofPhysical Review. A-
Appears in Collections:Artigos, TCCs, Teses e Dissertações da Unesp

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