dc.creator | Pérez Fernández, Pedro | es |
dc.creator | Relaño, Armando | es |
dc.creator | Arias Carrasco, José Miguel | es |
dc.creator | Dukelsky, Jorge | es |
dc.creator | García Ramos, José Enrique | es |
dc.date.accessioned | 2019-03-13T17:32:55Z | |
dc.date.available | 2019-03-13T17:32:55Z | |
dc.date.issued | 2009 | |
dc.identifier.citation | Pérez Fernández, P., Relaño, A., Arias Carrasco, J.M., Dukelsky, J. y García Ramos, J.E. (2009). Decoherence due to an excited-state quantum phase transition in a two-level boson model. Physical Review A - Atomic, Molecular, and Optical Physics, 80 (3), 032111-. | |
dc.identifier.issn | 1050-2947 | es |
dc.identifier.issn | 1094-1622 | es |
dc.identifier.uri | https://hdl.handle.net/11441/84192 | |
dc.description.abstract | The decoherence induced on a single qubit by its interaction with the environment is studied. The environment is modeled as a scalar two-level boson system that can go through either first-order or continuous-excited-state quantum phase transitions, depending on the values of the control parameters. A mean-field method based on the Tamm-Damkoff approximation is worked out in order to understand the observed behavior of the decoherence. Only the continuous-excited-state phase transition produces a noticeable effect in the decoherence of the qubit. This is maximal when the system-environment coupling brings the environment to the critical point for the continuous phase transition. In this situation, the decoherence factor (or the fidelity) goes to zero with a finite-size scaling power law. | es |
dc.description.sponsorship | Ministerio de Educación y Ciencia FIS2008-04189, FIS2006-12783-C03-01, FPA2006- 13807-C02-02, FPA2007-63074 | es |
dc.description.sponsorship | Comunidad de Madrid 200650M012 | es |
dc.description.sponsorship | Junta de Andalucía FQM160, FQM318, P05-FQM437, P07- FQM-02962 | es |
dc.format | application/pdf | es |
dc.language.iso | eng | es |
dc.publisher | American Physical Society | es |
dc.relation.ispartof | Physical Review A - Atomic, Molecular, and Optical Physics, 80 (3), 032111-. | |
dc.rights | Attribution-NonCommercial-NoDerivatives 4.0 Internacional | * |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/4.0/ | * |
dc.title | Decoherence due to an excited-state quantum phase transition in a two-level boson model | es |
dc.type | info:eu-repo/semantics/article | es |
dcterms.identifier | https://ror.org/03yxnpp24 | |
dc.type.version | info:eu-repo/semantics/publishedVersion | es |
dc.rights.accessRights | info:eu-repo/semantics/openAccess | es |
dc.contributor.affiliation | Universidad de Sevilla. Departamento de Física Atómica, Molecular y Nuclear | es |
dc.contributor.affiliation | Universidad de Sevilla. Departamento de Física Aplicada III | es |
dc.relation.projectID | FIS2008-04189 | es |
dc.relation.projectID | FIS2006-12783-C03-01 | es |
dc.relation.projectID | FPA2006- 13807-C02-02 | es |
dc.relation.projectID | FPA2007-63074 | es |
dc.relation.projectID | 200650M012 | es |
dc.relation.projectID | FQM160 | es |
dc.relation.projectID | FQM318 | es |
dc.relation.projectID | P05-FQM437 | es |
dc.relation.projectID | P07- FQM-02962 | es |
dc.relation.publisherversion | http://dx.doi.org/10.1103/PhysRevA.80.032111 | es |
dc.identifier.doi | 10.1103/PhysRevA.80.032111 | es |
idus.format.extent | 10 p. | es |
dc.journaltitle | Physical Review A - Atomic, Molecular, and Optical Physics | es |
dc.publication.volumen | 80 | es |
dc.publication.issue | 3 | es |
dc.publication.initialPage | 032111 | es |