Quantum Discord and entropic measures of quantum correlations: Optimization and behavior in finite XY spin chains
- Autores
- Canosa, Norma; Cerezo, M.; Gigena, Nicolás; Rossignoli, Raúl Dante
- Año de publicación
- 2017
- Idioma
- inglés
- Tipo de recurso
- parte de libro
- Estado
- versión publicada
- Descripción
- We discuss a generalization of the conditional entropy and one-way information deficit in quantum systems, based on general entropic forms. The formalism allows to consider simple entropic forms for which a closed evaluation of the associated optimization problem in qudit-qubit systems is shown to become feasible, allowing to approximate that of the quantum discord. As application, we examine quantum correlations of spin pairs in the exact ground state of finiteXYspin chains in a magnetic field through the quantum discord and information deficit. While these quantities show a similar behavior, their optimizing measurements exhibit significant differences, which can be understood and predicted through the previous approximations. The remarkable behavior of these quantities in the vicinity of transverse and non-transverse factorizing fields is also discussed.
- Materia
-
Ciencias Físicas
Quantum Correlations
Quantum Discord
Quantum Spin Chains - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- http://creativecommons.org/licenses/by-nc-sa/4.0/
- Repositorio
- Institución
- Comisión de Investigaciones Científicas de la Provincia de Buenos Aires
- OAI Identificador
- oai:digital.cic.gba.gob.ar:11746/9968
Ver los metadatos del registro completo
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CIC Digital (CICBA) |
spelling |
Quantum Discord and entropic measures of quantum correlations: Optimization and behavior in finite XY spin chainsCanosa, NormaCerezo, M.Gigena, NicolásRossignoli, Raúl DanteCiencias FísicasQuantum CorrelationsQuantum DiscordQuantum Spin ChainsWe discuss a generalization of the conditional entropy and one-way information deficit in quantum systems, based on general entropic forms. The formalism allows to consider simple entropic forms for which a closed evaluation of the associated optimization problem in qudit-qubit systems is shown to become feasible, allowing to approximate that of the quantum discord. As application, we examine quantum correlations of spin pairs in the exact ground state of finiteXYspin chains in a magnetic field through the quantum discord and information deficit. While these quantities show a similar behavior, their optimizing measurements exhibit significant differences, which can be understood and predicted through the previous approximations. The remarkable behavior of these quantities in the vicinity of transverse and non-transverse factorizing fields is also discussed.2017info:eu-repo/semantics/bookPartinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_3248info:ar-repo/semantics/parteDeLibroapplication/pdfhttps://digital.cic.gba.gob.ar/handle/11746/9968isbn:978-3-319-53412-1enginfo:eu-repo/semantics/altIdentifier/doi/10.1007/978-3-319-53412-1info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-sa/4.0/reponame:CIC Digital (CICBA)instname:Comisión de Investigaciones Científicas de la Provincia de Buenos Airesinstacron:CICBA2025-09-04T09:43:42Zoai:digital.cic.gba.gob.ar:11746/9968Institucionalhttp://digital.cic.gba.gob.arOrganismo científico-tecnológicoNo correspondehttp://digital.cic.gba.gob.ar/oai/snrdmarisa.degiusti@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:94412025-09-04 09:43:43.205CIC Digital (CICBA) - Comisión de Investigaciones Científicas de la Provincia de Buenos Airesfalse |
dc.title.none.fl_str_mv |
Quantum Discord and entropic measures of quantum correlations: Optimization and behavior in finite XY spin chains |
title |
Quantum Discord and entropic measures of quantum correlations: Optimization and behavior in finite XY spin chains |
spellingShingle |
Quantum Discord and entropic measures of quantum correlations: Optimization and behavior in finite XY spin chains Canosa, Norma Ciencias Físicas Quantum Correlations Quantum Discord Quantum Spin Chains |
title_short |
Quantum Discord and entropic measures of quantum correlations: Optimization and behavior in finite XY spin chains |
title_full |
Quantum Discord and entropic measures of quantum correlations: Optimization and behavior in finite XY spin chains |
title_fullStr |
Quantum Discord and entropic measures of quantum correlations: Optimization and behavior in finite XY spin chains |
title_full_unstemmed |
Quantum Discord and entropic measures of quantum correlations: Optimization and behavior in finite XY spin chains |
title_sort |
Quantum Discord and entropic measures of quantum correlations: Optimization and behavior in finite XY spin chains |
dc.creator.none.fl_str_mv |
Canosa, Norma Cerezo, M. Gigena, Nicolás Rossignoli, Raúl Dante |
author |
Canosa, Norma |
author_facet |
Canosa, Norma Cerezo, M. Gigena, Nicolás Rossignoli, Raúl Dante |
author_role |
author |
author2 |
Cerezo, M. Gigena, Nicolás Rossignoli, Raúl Dante |
author2_role |
author author author |
dc.subject.none.fl_str_mv |
Ciencias Físicas Quantum Correlations Quantum Discord Quantum Spin Chains |
topic |
Ciencias Físicas Quantum Correlations Quantum Discord Quantum Spin Chains |
dc.description.none.fl_txt_mv |
We discuss a generalization of the conditional entropy and one-way information deficit in quantum systems, based on general entropic forms. The formalism allows to consider simple entropic forms for which a closed evaluation of the associated optimization problem in qudit-qubit systems is shown to become feasible, allowing to approximate that of the quantum discord. As application, we examine quantum correlations of spin pairs in the exact ground state of finiteXYspin chains in a magnetic field through the quantum discord and information deficit. While these quantities show a similar behavior, their optimizing measurements exhibit significant differences, which can be understood and predicted through the previous approximations. The remarkable behavior of these quantities in the vicinity of transverse and non-transverse factorizing fields is also discussed. |
description |
We discuss a generalization of the conditional entropy and one-way information deficit in quantum systems, based on general entropic forms. The formalism allows to consider simple entropic forms for which a closed evaluation of the associated optimization problem in qudit-qubit systems is shown to become feasible, allowing to approximate that of the quantum discord. As application, we examine quantum correlations of spin pairs in the exact ground state of finiteXYspin chains in a magnetic field through the quantum discord and information deficit. While these quantities show a similar behavior, their optimizing measurements exhibit significant differences, which can be understood and predicted through the previous approximations. The remarkable behavior of these quantities in the vicinity of transverse and non-transverse factorizing fields is also discussed. |
publishDate |
2017 |
dc.date.none.fl_str_mv |
2017 |
dc.type.none.fl_str_mv |
info:eu-repo/semantics/bookPart info:eu-repo/semantics/publishedVersion http://purl.org/coar/resource_type/c_3248 info:ar-repo/semantics/parteDeLibro |
format |
bookPart |
status_str |
publishedVersion |
dc.identifier.none.fl_str_mv |
https://digital.cic.gba.gob.ar/handle/11746/9968 isbn:978-3-319-53412-1 |
url |
https://digital.cic.gba.gob.ar/handle/11746/9968 |
identifier_str_mv |
isbn:978-3-319-53412-1 |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/doi/10.1007/978-3-319-53412-1 |
dc.rights.none.fl_str_mv |
info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by-nc-sa/4.0/ |
eu_rights_str_mv |
openAccess |
rights_invalid_str_mv |
http://creativecommons.org/licenses/by-nc-sa/4.0/ |
dc.format.none.fl_str_mv |
application/pdf |
dc.source.none.fl_str_mv |
reponame:CIC Digital (CICBA) instname:Comisión de Investigaciones Científicas de la Provincia de Buenos Aires instacron:CICBA |
reponame_str |
CIC Digital (CICBA) |
collection |
CIC Digital (CICBA) |
instname_str |
Comisión de Investigaciones Científicas de la Provincia de Buenos Aires |
instacron_str |
CICBA |
institution |
CICBA |
repository.name.fl_str_mv |
CIC Digital (CICBA) - Comisión de Investigaciones Científicas de la Provincia de Buenos Aires |
repository.mail.fl_str_mv |
marisa.degiusti@sedici.unlp.edu.ar |
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12.623145 |