Dynamics of entanglement and quantum discord in the Tavis-Cummings model

We revisit the problem of the dynamics of quantum correlations in the Tavis-Cummings model. Our results show that the dynamics of entanglement and quantum discord are far from being trivial or intuitive. We find states with the same entanglement but different discord and states where the two quantif...

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Autores:
Tipo de recurso:
Fecha de publicación:
2016
Institución:
Ministerio de Ciencia, Tecnología e Innovación
Repositorio:
Repositorio Minciencias
Idioma:
eng
OAI Identifier:
oai:repositorio.minciencias.gov.co:20.500.14143/34062
Acceso en línea:
http://repositorio.colciencias.gov.co/handle/11146/34062
Palabra clave:
Métodos de simulación
Campos electromagnéticos
Energía (Física)
Foundations of quantum mechanics
Entanglement
Quantum discord
Quantum information
Teoría cuántica
Mecánica cuántica
Propagación de ondas
Electrónica cuántica
Rights
License
http://purl.org/coar/access_right/c_f1cf
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dc.title.es_CO.fl_str_mv Dynamics of entanglement and quantum discord in the Tavis-Cummings model
title Dynamics of entanglement and quantum discord in the Tavis-Cummings model
spellingShingle Dynamics of entanglement and quantum discord in the Tavis-Cummings model
Métodos de simulación
Campos electromagnéticos
Energía (Física)
Foundations of quantum mechanics
Entanglement
Quantum discord
Quantum information
Teoría cuántica
Mecánica cuántica
Propagación de ondas
Electrónica cuántica
title_short Dynamics of entanglement and quantum discord in the Tavis-Cummings model
title_full Dynamics of entanglement and quantum discord in the Tavis-Cummings model
title_fullStr Dynamics of entanglement and quantum discord in the Tavis-Cummings model
title_full_unstemmed Dynamics of entanglement and quantum discord in the Tavis-Cummings model
title_sort Dynamics of entanglement and quantum discord in the Tavis-Cummings model
dc.subject.lemb.es_CO.fl_str_mv Métodos de simulación
Campos electromagnéticos
Energía (Física)
topic Métodos de simulación
Campos electromagnéticos
Energía (Física)
Foundations of quantum mechanics
Entanglement
Quantum discord
Quantum information
Teoría cuántica
Mecánica cuántica
Propagación de ondas
Electrónica cuántica
dc.subject.keyword.none.fl_str_mv Foundations of quantum mechanics
Entanglement
Quantum discord
Quantum information
dc.subject.spines.es_CO.fl_str_mv Teoría cuántica
Mecánica cuántica
Propagación de ondas
Electrónica cuántica
description We revisit the problem of the dynamics of quantum correlations in the Tavis-Cummings model. Our results show that the dynamics of entanglement and quantum discord are far from being trivial or intuitive. We find states with the same entanglement but different discord and states where the two quantifiers give opposite information about correlations at a certain time. We furthermore show that many of the dynamical features of quantum discord attributed to dissipation are already present in the exact framework and are due to the characteristic quantum nonlinearity of the model and to the choice of initial conditions. Through a comprehensive analysis of pure and mixed initial conditions, we find a fascinating range of phenomena that can be used for experimental purposes. We propose an experiment called quantum discord gates where for given pure initial condition discord is zero or non-zero depending on the number of photons in the cavity. Given the marginal character of states with zero discord this result is not only completely counterintuitive but is also useful as a way to count photons.
publishDate 2016
dc.date.issued.none.fl_str_mv 2016-05-20
dc.date.accessioned.none.fl_str_mv 2019-03-17T21:19:53Z
dc.date.available.none.fl_str_mv 2019-03-17T21:19:53Z
dc.date.embargoEnd.es_CO.fl_str_mv info:eu-repo/date/embargoEnd/2024-01-31
dc.type.es_CO.fl_str_mv Artículo científico
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dc.type.driver.es_CO.fl_str_mv info:eu-repo/semantics/article
dc.identifier.uri.none.fl_str_mv http://repositorio.colciencias.gov.co/handle/11146/34062
dc.identifier.bibliographicCitation.es_CO.fl_str_mv Contiene 74 referencias bibliográficas. Véase el documento adjunto
dc.identifier.doi.none.fl_str_mv 10.1088/0953-4075/49/12/125502
url http://repositorio.colciencias.gov.co/handle/11146/34062
identifier_str_mv Contiene 74 referencias bibliográficas. Véase el documento adjunto
10.1088/0953-4075/49/12/125502
dc.language.iso.es_CO.fl_str_mv eng
language eng
dc.relation.ispartof.es_CO.fl_str_mv Baños térmicos cuánticos: influencia de la no-gaussianidad estadística y no-localidad dinámica en la evolución temporal de sistemas cuánticos abiertos. La publicación completa está disponible en : <a href="http://repositorio.colciencias.gov.co/handle/11146/34053" target="blank">http://repositorio.colciencias.gov.co/handle/11146/34053</a>
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dc.format.es_CO.fl_str_mv pdf
dc.format.extent.es_CO.fl_str_mv 11 páginas
dc.coverage.spatial.es_CO.fl_str_mv Colombia
dc.source.es_CO.fl_str_mv Journal of Physics B: Atomic, Molecular and Optical Physics. No 49. 125502 (11 pp). 2016
institution Ministerio de Ciencia, Tecnología e Innovación
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spelling Colombia2019-03-17T21:19:53Z2019-03-17T21:19:53Z2016-05-20info:eu-repo/date/embargoEnd/2024-01-31http://repositorio.colciencias.gov.co/handle/11146/34062Contiene 74 referencias bibliográficas. Véase el documento adjunto10.1088/0953-4075/49/12/125502We revisit the problem of the dynamics of quantum correlations in the Tavis-Cummings model. Our results show that the dynamics of entanglement and quantum discord are far from being trivial or intuitive. We find states with the same entanglement but different discord and states where the two quantifiers give opposite information about correlations at a certain time. We furthermore show that many of the dynamical features of quantum discord attributed to dissipation are already present in the exact framework and are due to the characteristic quantum nonlinearity of the model and to the choice of initial conditions. Through a comprehensive analysis of pure and mixed initial conditions, we find a fascinating range of phenomena that can be used for experimental purposes. We propose an experiment called quantum discord gates where for given pure initial condition discord is zero or non-zero depending on the number of photons in the cavity. Given the marginal character of states with zero discord this result is not only completely counterintuitive but is also useful as a way to count photons.Departamento Administrativo de Ciencia, Tecnología e Innovación [CO] Colciencias1115-569-34912nopdf11 páginasengBaños térmicos cuánticos: influencia de la no-gaussianidad estadística y no-localidad dinámica en la evolución temporal de sistemas cuánticos abiertos. La publicación completa está disponible en : <a href="http://repositorio.colciencias.gov.co/handle/11146/34053" target="blank">http://repositorio.colciencias.gov.co/handle/11146/34053</a>Journal of Physics B: Atomic, Molecular and Optical Physics. No 49. 125502 (11 pp). 2016Dynamics of entanglement and quantum discord in the Tavis-Cummings modelArtículo científicoinfo:eu-repo/semantics/articlehttp://purl.org/coar/version/c_970fb48d4fbd8a85http://purl.org/coar/resource_type/c_2df8fbb1Administradores de ciencia y tecnologíaInvestigadoresMétodos de simulaciónCampos electromagnéticosEnergía (Física)Foundations of quantum mechanicsEntanglementQuantum discordQuantum informationTeoría cuánticaMecánica cuánticaPropagación de ondasElectrónica cuánticahttp://purl.org/coar/access_right/c_f1cfRestrepo, JulianaRodríguez, Boris A.Universidad de Antioquia, UdeAjulianrestrepo@uan.edu.co2013-02Programa Nacional de Ciencias BásicasComunidad científica colombiana0005-2013Artículos de investigaciónPublicationORIGINALDynamics of entanglement and quantum discord in the Tavis-Cummings model - copia.pdfDynamics of entanglement and quantum discord in the Tavis-Cummings model - copia.pdfArtículo The Journal of Physics B: Atomic, Molecular and optical Physicsapplication/pdf868384https://repositorio.minciencias.gov.co/bitstreams/7fe1657d-2b06-4594-a271-f5e615b9f127/downloadddb3b15e74a3f2e92f36e36061c71c16MD51LICENSElicense.txtlicense.txttext/plain; charset=utf-81748https://repositorio.minciencias.gov.co/bitstreams/d8bb5681-e1d2-42a7-872d-bb044cb89a3e/download8a4605be74aa9ea9d79846c1fba20a33MD52TEXTDynamics of entanglement and quantum discord in the Tavis-Cummings model - copia.pdf.txtDynamics of entanglement and quantum discord in the Tavis-Cummings model - copia.pdf.txtExtracted texttext/plain11https://repositorio.minciencias.gov.co/bitstreams/c178b878-b1a6-419d-8164-d38c97e5334e/downloadb308b7fe5c1c2bbdc0cb686d451b84aaMD55THUMBNAILDynamics of entanglement and quantum discord in the Tavis-Cummings model - copia.pdf.jpgDynamics of entanglement and quantum discord in the Tavis-Cummings model - copia.pdf.jpgGenerated Thumbnailimage/jpeg15746https://repositorio.minciencias.gov.co/bitstreams/fa5b95ec-0bad-43a4-8a37-b45fe8b4c065/download22e76996f3ec58df72b286e2ec46c20bMD5620.500.14143/34062oai:repositorio.minciencias.gov.co:20.500.14143/340622023-11-29 17:39:07.808restrictedhttps://repositorio.minciencias.gov.coRepositorio Institucional de Mincienciascendoc@minciencias.gov.co