Conditional past-future correlation induced by non-Markovian dephasing reservoirs

Autores
Budini, Adrian Adolfo
Año de publicación
2019
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Memory effects can be studied through a conditional past-future correlation, which measures departure with respect to a conditional past-future independence valid in a memoryless Markovian regime. In a quantum regime this property leads to an operational definition of quantum non-Markovianity based on three consecutive system measurement processes and postselection [Phys. Rev. Lett. 121, 240401 (2018)10.1103/PhysRevLett.121.240401]. Here, we study the conditional past-future correlation for a qubit system coupled to different dephasing environments. Exact solutions are obtained for a quantum spin bath as well as for classically fluctuating random Hamiltonian models. The developing of memory effects and departures from Born-Markov or white-noise approximations are related to a measurement back action that changes the system dynamics between consecutive measurements. It is shown that this effect may develop even when the former system evolution is given by a time-independent Lindblad equation. This unusual non-Markovian case arises when the characteristic parameters of the dynamics become Lorentzian random distributed variables.
Fil: Budini, Adrian Adolfo. Universidad Tecnológica Nacional; Argentina. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina
Materia
No-Markovianidad cuantica
Ecuaciones maestras cuanticas
Procesos de medicion en sistemas cuanticos abiertos
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/125271
Acceder
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spelling Conditional past-future correlation induced by non-Markovian dephasing reservoirsBudini, Adrian AdolfoNo-Markovianidad cuanticaEcuaciones maestras cuanticasProcesos de medicion en sistemas cuanticos abiertoshttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1Memory effects can be studied through a conditional past-future correlation, which measures departure with respect to a conditional past-future independence valid in a memoryless Markovian regime. In a quantum regime this property leads to an operational definition of quantum non-Markovianity based on three consecutive system measurement processes and postselection [Phys. Rev. Lett. 121, 240401 (2018)10.1103/PhysRevLett.121.240401]. Here, we study the conditional past-future correlation for a qubit system coupled to different dephasing environments. Exact solutions are obtained for a quantum spin bath as well as for classically fluctuating random Hamiltonian models. The developing of memory effects and departures from Born-Markov or white-noise approximations are related to a measurement back action that changes the system dynamics between consecutive measurements. It is shown that this effect may develop even when the former system evolution is given by a time-independent Lindblad equation. This unusual non-Markovian case arises when the characteristic parameters of the dynamics become Lorentzian random distributed variables.Fil: Budini, Adrian Adolfo. Universidad Tecnológica Nacional; Argentina. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; ArgentinaAmerican Physical Society2019-05-28info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/125271Budini, Adrian Adolfo; Conditional past-future correlation induced by non-Markovian dephasing reservoirs; American Physical Society; Physical Review A; 99; 5; 28-5-2019; 1-112469-99262469-9934CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevA.99.052125info:eu-repo/semantics/altIdentifier/url/https://journals.aps.org/pra/abstract/10.1103/PhysRevA.99.052125info:eu-repo/semantics/altIdentifier/url/https://arxiv.org/abs/1903.05259v1info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T10:04:07Zoai:ri.conicet.gov.ar:11336/125271instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-03 10:04:08.166CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Conditional past-future correlation induced by non-Markovian dephasing reservoirs
title Conditional past-future correlation induced by non-Markovian dephasing reservoirs
spellingShingle Conditional past-future correlation induced by non-Markovian dephasing reservoirs
Budini, Adrian Adolfo
No-Markovianidad cuantica
Ecuaciones maestras cuanticas
Procesos de medicion en sistemas cuanticos abiertos
title_short Conditional past-future correlation induced by non-Markovian dephasing reservoirs
title_full Conditional past-future correlation induced by non-Markovian dephasing reservoirs
title_fullStr Conditional past-future correlation induced by non-Markovian dephasing reservoirs
title_full_unstemmed Conditional past-future correlation induced by non-Markovian dephasing reservoirs
title_sort Conditional past-future correlation induced by non-Markovian dephasing reservoirs
dc.creator.none.fl_str_mv Budini, Adrian Adolfo
author Budini, Adrian Adolfo
author_facet Budini, Adrian Adolfo
author_role author
dc.subject.none.fl_str_mv No-Markovianidad cuantica
Ecuaciones maestras cuanticas
Procesos de medicion en sistemas cuanticos abiertos
topic No-Markovianidad cuantica
Ecuaciones maestras cuanticas
Procesos de medicion en sistemas cuanticos abiertos
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Memory effects can be studied through a conditional past-future correlation, which measures departure with respect to a conditional past-future independence valid in a memoryless Markovian regime. In a quantum regime this property leads to an operational definition of quantum non-Markovianity based on three consecutive system measurement processes and postselection [Phys. Rev. Lett. 121, 240401 (2018)10.1103/PhysRevLett.121.240401]. Here, we study the conditional past-future correlation for a qubit system coupled to different dephasing environments. Exact solutions are obtained for a quantum spin bath as well as for classically fluctuating random Hamiltonian models. The developing of memory effects and departures from Born-Markov or white-noise approximations are related to a measurement back action that changes the system dynamics between consecutive measurements. It is shown that this effect may develop even when the former system evolution is given by a time-independent Lindblad equation. This unusual non-Markovian case arises when the characteristic parameters of the dynamics become Lorentzian random distributed variables.
Fil: Budini, Adrian Adolfo. Universidad Tecnológica Nacional; Argentina. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina
description Memory effects can be studied through a conditional past-future correlation, which measures departure with respect to a conditional past-future independence valid in a memoryless Markovian regime. In a quantum regime this property leads to an operational definition of quantum non-Markovianity based on three consecutive system measurement processes and postselection [Phys. Rev. Lett. 121, 240401 (2018)10.1103/PhysRevLett.121.240401]. Here, we study the conditional past-future correlation for a qubit system coupled to different dephasing environments. Exact solutions are obtained for a quantum spin bath as well as for classically fluctuating random Hamiltonian models. The developing of memory effects and departures from Born-Markov or white-noise approximations are related to a measurement back action that changes the system dynamics between consecutive measurements. It is shown that this effect may develop even when the former system evolution is given by a time-independent Lindblad equation. This unusual non-Markovian case arises when the characteristic parameters of the dynamics become Lorentzian random distributed variables.
publishDate 2019
dc.date.none.fl_str_mv 2019-05-28
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/125271
Budini, Adrian Adolfo; Conditional past-future correlation induced by non-Markovian dephasing reservoirs; American Physical Society; Physical Review A; 99; 5; 28-5-2019; 1-11
2469-9926
2469-9934
CONICET Digital
CONICET
url http://hdl.handle.net/11336/125271
identifier_str_mv Budini, Adrian Adolfo; Conditional past-future correlation induced by non-Markovian dephasing reservoirs; American Physical Society; Physical Review A; 99; 5; 28-5-2019; 1-11
2469-9926
2469-9934
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevA.99.052125
info:eu-repo/semantics/altIdentifier/url/https://journals.aps.org/pra/abstract/10.1103/PhysRevA.99.052125
info:eu-repo/semantics/altIdentifier/url/https://arxiv.org/abs/1903.05259v1
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv American Physical Society
publisher.none.fl_str_mv American Physical Society
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 13.13397

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