Decoherence as a Signature of an Excited State Quantum Phase Transition in Two Level Boson Systems

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dc.book.titleNuclear Structure and Dynamics '09
dc.contributor.authorGarcía Ramos, J. E.
dc.contributor.authorArias, J. M.
dc.contributor.authorDukelsky, J.
dc.contributor.authorPérez Fernández, P.
dc.contributor.authorRelaño Pérez, Armando
dc.contributor.editorMilin, M.
dc.contributor.editorNikšić, T.
dc.contributor.editorVretenar, D.
dc.contributor.editorSzilner, S.
dc.date.accessioned2023-06-20T13:43:06Z
dc.date.available2023-06-20T13:43:06Z
dc.date.issued2009
dc.description© 2009 American Institute of Physics. International Conference Nuclear Structure and Dynamics (1ª. 2009. Dubrovnik (Croacia). This work has been partially supported by the Spanish MEC (FEDER) under projects number FIS2006-12783-C03-01, FPA2007-63074 and FIS2008-04189, by Comunidad de Madrid and CSIC under project 200650M012, by Junta de Andalucia under projects FQM160, FQM318, P05-FQM437 and P07-FQM-02962 and by the Spanish Consolider-Ingenio 2010 Programme CPAN (CSD2007-00042). A.R. is supported by the Spanish program "Juan de la Cierva", and P. P-F., by a grant from the Spanish MEC.
dc.description.abstractWe analyze the decoherence induced on a single qubit by the interaction with a two-level boson system with critical internal dynamics. We explore how the decoherence process is affected by the presence of quantum phase transitions in the environment. We conclude that the dynamics of the qubit changes dramatically when the environment passes through a continuous excited state quantum phase transition. If the system-environment coupling energy equals the energy at which the environment has a critical behavior, the decoherence induced on the qubit is maximal and the fidelity tends to zero with finite size scaling obeying a power-law.
dc.description.departmentDepto. de Estructura de la Materia, Física Térmica y Electrónica
dc.description.facultyFac. de Ciencias Físicas
dc.description.refereedTRUE
dc.description.sponsorshipMinisterio de Educación y Ciencia (MEC), España
dc.description.sponsorshipMinisterio de Economía y Competitividad (MINECO), España
dc.description.sponsorshipFondo Europeo de Desarrollo Regional (FEDER), UE
dc.description.sponsorshipUnión Europea (UE)
dc.description.sponsorshipComunidad de Madrid
dc.description.sponsorshipConsejo Superior de Investigaciones Científicas (CSIC), España
dc.description.sponsorshipJunta de Andalucía
dc.description.sponsorshipPrograma Consolider-Ingenio 2010
dc.description.sponsorshipCentro Nacional de Física de Partículas, Astropartículas y Nuclear (CPAN), España
dc.description.sponsorshipPrograma CPAN
dc.description.statuspub
dc.eprint.idhttps://eprints.ucm.es/id/eprint/35498
dc.identifier.doi10.1063/1.3232073
dc.identifier.isbn978-0-7354-0702-2
dc.identifier.officialurlhttp://dx.doi.org/10.1063/1.3232073
dc.identifier.relatedurlhttp://scitation.aip.org/
dc.identifier.urihttps://hdl.handle.net/20.500.14352/53487
dc.issue.number1165
dc.language.isoeng
dc.page.final210
dc.page.initial207
dc.publisherAmerican Institute of Physics (AIP)
dc.relation.ispartofseriesAIP Proceedings
dc.relation.projectIDFIS2006-12783-C03-01
dc.relation.projectIDFPA2007-63074
dc.relation.projectIDFIS2008-04189
dc.relation.projectIDFQM160
dc.relation.projectIDFQM318
dc.relation.projectIDP05-FQM437
dc.relation.projectIDP07-FQM-02962
dc.relation.projectIDCSD2007-00042
dc.rights.accessRightsopen access
dc.subject.cdu536
dc.subject.keywordQuantum decoherence
dc.subject.keywordQuatum phase transition
dc.subject.keywordExcited state quatum phase transition
dc.subject.ucmFísica (Física)
dc.subject.unesco22 Física
dc.titleDecoherence as a Signature of an Excited State Quantum Phase Transition in Two Level Boson Systems
dc.typebook part
dcterms.references1. W. H. Zurek, Rev. Mod. Phys. 75, 715 (2003); M. Nielsen and I. Chuang, Quantum Computation and Quantum Information (Cambridge University Press, Cambridge, UK, 2000). 2. H. T. Quan, Z. Song, X. F. Liu, P. Zanardi, and C. P Sun, Phys. Rev. Lett. 96, 140604 (2006); F. M. Cucchietti, S. Fernández-Vidal, and J. P Paz, Phys. Rev A75, 032337 (2007); C. Cormick and J. P. Paz, Phys Rev. All, 022317 (2008). 3. A. Relaño, J.M. Arias, J. Dukelsky, J.E. García-Ramos, and P. Pérez-Fernández, Phys. Rev. A78, 060102R(2008). 4. P Cejnar, S. Heinze, and M. Macek, Phys. Rev. Lett 99, 100601 (2007). 5. M. A. Caprio, P Cejnar, and F. lachello, Ann. Phys. 323, 1106 (2008). 6. J. Vidal, J. M. Arias, J. Dukelsky, J. E. García-Ramos, Phys. Rev C73, 054305 (2006); J. M. Arias, J. Dukelsky, J. E. García-Ramos, and J. Vidal, Phys. Rev. CIS, 014301 (2007).
dspace.entity.typePublication
relation.isAuthorOfPublication53fed635-944b-485a-b13a-ea8f9355b7aa
relation.isAuthorOfPublication.latestForDiscovery53fed635-944b-485a-b13a-ea8f9355b7aa

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