Quantum properties of a binary bosonic mixture in a double well

This work contains a detailed analysis of the properties of the ground state of a two-component two-site Bose-Hubbard model, which captures the physics of a binary mixture of Bose-Einstein condensates trapped in a double-well potential. The atom-atom interactions within each species and among the tw...

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Detalles Bibliográficos
Autores: Mujal Torreblanca, Pere, Juliá-Díaz, Bruno, Polls Martí, Artur
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2016
País:España
Institución:Universidad de Barcelona
Repositorio:Dipòsit Digital de la UB
OAI Identifier:oai:diposit.ub.edu:2445/128464
Acceso en línea:https://hdl.handle.net/2445/128464
Access Level:acceso abierto
Palabra clave:Condensació de Bose-Einstein
Gasos
Bose-Einstein condensation
Gases
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spelling Quantum properties of a binary bosonic mixture in a double wellMujal Torreblanca, PereJuliá-Díaz, BrunoPolls Martí, ArturCondensació de Bose-EinsteinGasosBose-Einstein condensationGasesThis work contains a detailed analysis of the properties of the ground state of a two-component two-site Bose-Hubbard model, which captures the physics of a binary mixture of Bose-Einstein condensates trapped in a double-well potential. The atom-atom interactions within each species and among the two species are taken as variable parameters, while the hopping terms are kept fixed. To characterize the ground state, we use observables such as the imbalance of population and its quantum uncertainty. The quantum many-body correlations present in the system are further quantified by studying the degree of condensation of each species, the entanglement between the two sites, and the entanglement between the two species. The latter is measured by means of the Schmidt gap, the von Neumann entropy, or the purity obtained after tracing out a part of the system. A number of relevant states are identified, e.g., Schrödinger catlike many-body states, in which the outcome of the population imbalance of both components is completely correlated, and other states with even larger von Neumann entropy which have a large spread in Fock space.American Physical Society2016info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://hdl.handle.net/2445/128464Articles publicats en revistes (Física Quàntica i Astrofísica)reponame:Dipòsit Digital de la UBinstname:Universidad de BarcelonaInglésReproducció del document publicat a: https://doi.org/10.1103/PhysRevA.93.043619Physical Review A, 2016, vol. 93, num. 4, p. 043619-1-043619-11https://doi.org/10.1103/PhysRevA.93.043619(c) American Physical Society, 2016info:eu-repo/semantics/openAccessoai:diposit.ub.edu:2445/1284642026-05-27T06:46:51Z
dc.title.none.fl_str_mv Quantum properties of a binary bosonic mixture in a double well
title Quantum properties of a binary bosonic mixture in a double well
spellingShingle Quantum properties of a binary bosonic mixture in a double well
Mujal Torreblanca, Pere
Condensació de Bose-Einstein
Gasos
Bose-Einstein condensation
Gases
title_short Quantum properties of a binary bosonic mixture in a double well
title_full Quantum properties of a binary bosonic mixture in a double well
title_fullStr Quantum properties of a binary bosonic mixture in a double well
title_full_unstemmed Quantum properties of a binary bosonic mixture in a double well
title_sort Quantum properties of a binary bosonic mixture in a double well
dc.creator.none.fl_str_mv Mujal Torreblanca, Pere
Juliá-Díaz, Bruno
Polls Martí, Artur
author Mujal Torreblanca, Pere
author_facet Mujal Torreblanca, Pere
Juliá-Díaz, Bruno
Polls Martí, Artur
author_role author
author2 Juliá-Díaz, Bruno
Polls Martí, Artur
author2_role author
author
dc.subject.none.fl_str_mv Condensació de Bose-Einstein
Gasos
Bose-Einstein condensation
Gases
topic Condensació de Bose-Einstein
Gasos
Bose-Einstein condensation
Gases
description This work contains a detailed analysis of the properties of the ground state of a two-component two-site Bose-Hubbard model, which captures the physics of a binary mixture of Bose-Einstein condensates trapped in a double-well potential. The atom-atom interactions within each species and among the two species are taken as variable parameters, while the hopping terms are kept fixed. To characterize the ground state, we use observables such as the imbalance of population and its quantum uncertainty. The quantum many-body correlations present in the system are further quantified by studying the degree of condensation of each species, the entanglement between the two sites, and the entanglement between the two species. The latter is measured by means of the Schmidt gap, the von Neumann entropy, or the purity obtained after tracing out a part of the system. A number of relevant states are identified, e.g., Schrödinger catlike many-body states, in which the outcome of the population imbalance of both components is completely correlated, and other states with even larger von Neumann entropy which have a large spread in Fock space.
publishDate 2016
dc.date.none.fl_str_mv 2016
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv https://hdl.handle.net/2445/128464
url https://hdl.handle.net/2445/128464
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Reproducció del document publicat a: https://doi.org/10.1103/PhysRevA.93.043619
Physical Review A, 2016, vol. 93, num. 4, p. 043619-1-043619-11
https://doi.org/10.1103/PhysRevA.93.043619
dc.rights.none.fl_str_mv (c) American Physical Society, 2016
info:eu-repo/semantics/openAccess
rights_invalid_str_mv (c) American Physical Society, 2016
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 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 Articles publicats en revistes (Física Quàntica i Astrofísica)
reponame:Dipòsit Digital de la UB
instname:Universidad de Barcelona
instname_str Universidad de Barcelona
reponame_str Dipòsit Digital de la UB
collection Dipòsit Digital de la UB
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,300719

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