Protecting the SWAP operation from general and residual errors by continuous dynamical decoupling

dc.contributor.authorFanchini, F. F. [UNESP]
dc.contributor.authorNapolitano, R. D.J.
dc.contributor.authorÇakmak, B.
dc.contributor.authorCaldeira, A. O.
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniversidade de São Paulo (USP)
dc.contributor.institutionUniversidade Estadual de Campinas (UNICAMP)
dc.date.accessioned2018-12-11T16:38:30Z
dc.date.available2018-12-11T16:38:30Z
dc.date.issued2015-04-22
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.affiliationFaculdade de Ciências, UNESP - Universidade Estadual Paulista
dc.description.affiliationInstituto de Física de São Carlos, Universidade de São Paulo, P.O. Box 369
dc.description.affiliationInstituto de Física Gleb Wataghin, Universidade Estadual de Campinas, P.O. Box 6165
dc.description.affiliationUnespFaculdade de Ciências, UNESP - Universidade Estadual Paulista
dc.identifierhttp://dx.doi.org/10.1103/PhysRevA.91.042325
dc.identifier.citationPhysical Review A - Atomic, Molecular, and Optical Physics, v. 91, n. 4, 2015.
dc.identifier.doi10.1103/PhysRevA.91.042325
dc.identifier.file2-s2.0-84929497893.pdf
dc.identifier.issn1094-1622
dc.identifier.issn1050-2947
dc.identifier.lattes8884890472193474
dc.identifier.orcid0000-0003-3297-905X
dc.identifier.scopus2-s2.0-84929497893
dc.identifier.urihttp://hdl.handle.net/11449/167830
dc.language.isoeng
dc.relation.ispartofPhysical Review A - Atomic, Molecular, and Optical Physics
dc.relation.ispartofsjr1,288
dc.relation.ispartofsjr1,288
dc.rights.accessRightsAcesso aberto
dc.sourceScopus
dc.titleProtecting the SWAP operation from general and residual errors by continuous dynamical decouplingen
dc.typeArtigo
unesp.author.lattes8884890472193474[1]
unesp.author.orcid0000-0003-3297-905X[1]

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