Two-particle quantum correlations in stochastically-coupled networks

Quantum walks in dynamically-disordered networks have become an invaluable tool for understanding the physics of open quantum systems. Although much work has been carried out considering networks affected by diagonal disorder, it is of fundamental importance to study the effects of fluctuating coupl...

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Autores: León-Montiel, Roberto de Jesús|||0000-0002-3045-3604, Méndez, Vicenç|||0000-0002-2605-6606, Quiroz-Juárez, Mario A.|||0000-0002-5995-9510, Ortega, Adrian, Benet, Luis|||0000-0002-8470-9054, Perez-Leija, Armando, Busch, Kurt
Tipo de recurso: artículo
Fecha de publicación:2019
País:España
Institución:Universitat Autònoma de Barcelona
Repositorio:Dipòsit Digital de Documents de la UAB
Idioma:inglés
OAI Identifier:oai:ddd.uab.cat:223940
Acceso en línea:https://ddd.uab.cat/record/223940
https://dx.doi.org/urn:doi:10.1088/1367-2630/ab1c79
Access Level:acceso abierto
Palabra clave:Many-particle quantum correlations
Quantum networks
Off-diagonal dynamical disorder
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spelling Two-particle quantum correlations in stochastically-coupled networksLeón-Montiel, Roberto de Jesús|||0000-0002-3045-3604Méndez, Vicenç|||0000-0002-2605-6606Quiroz-Juárez, Mario A.|||0000-0002-5995-9510Ortega, AdrianBenet, Luis|||0000-0002-8470-9054Perez-Leija, ArmandoBusch, KurtMany-particle quantum correlationsQuantum networksOff-diagonal dynamical disorderQuantum walks in dynamically-disordered networks have become an invaluable tool for understanding the physics of open quantum systems. Although much work has been carried out considering networks affected by diagonal disorder, it is of fundamental importance to study the effects of fluctuating couplings. This is particularly relevant in materials science models, where the interaction forces may change depending on the species of the atoms being linked. In this work, we make use of stochastic calculus to derive a master equation for the dynamics of one and two non-interacting correlated particles in tight-binding networks affected by off-diagonal dynamical disorder. We show that the presence of noise in the couplings of a quantum network creates a pure-dephasing-like process that destroys all coherences in the single-particle Hilbert subspace. Moreover, we show that when two or more correlated particles propagate in the network, coherences accounting for particle indistinguishability are robust against the impact of off-diagonal noise, thus showing that it is possible, in principle, to find specific conditions for which many indistinguishable particles can traverse stochastically-coupled networks without losing their ability to interfere. 22019-01-0120192019-01-01Articlehttp://purl.org/coar/resource_type/c_6501VoRhttp://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/articleapplication/pdfhttps://ddd.uab.cat/record/223940https://dx.doi.org/urn:doi:10.1088/1367-2630/ab1c79reponame:Dipòsit Digital de Documents de la UABinstname:Universitat Autònoma de BarcelonaInglésengAgencia Estatal de Investigación https://doi.org/10.13039/501100011033 CGL2016-78156-C2-2-Ropen accesshttp://purl.org/coar/access_right/c_abf2Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original.https://creativecommons.org/licenses/by/4.0/info:eu-repo/semantics/openAccessoai:ddd.uab.cat:2239402026-06-06T12:50:31Z
dc.title.none.fl_str_mv Two-particle quantum correlations in stochastically-coupled networks
title Two-particle quantum correlations in stochastically-coupled networks
spellingShingle Two-particle quantum correlations in stochastically-coupled networks
León-Montiel, Roberto de Jesús|||0000-0002-3045-3604
Many-particle quantum correlations
Quantum networks
Off-diagonal dynamical disorder
title_short Two-particle quantum correlations in stochastically-coupled networks
title_full Two-particle quantum correlations in stochastically-coupled networks
title_fullStr Two-particle quantum correlations in stochastically-coupled networks
title_full_unstemmed Two-particle quantum correlations in stochastically-coupled networks
title_sort Two-particle quantum correlations in stochastically-coupled networks
dc.creator.none.fl_str_mv León-Montiel, Roberto de Jesús|||0000-0002-3045-3604
Méndez, Vicenç|||0000-0002-2605-6606
Quiroz-Juárez, Mario A.|||0000-0002-5995-9510
Ortega, Adrian
Benet, Luis|||0000-0002-8470-9054
Perez-Leija, Armando
Busch, Kurt
author León-Montiel, Roberto de Jesús|||0000-0002-3045-3604
author_facet León-Montiel, Roberto de Jesús|||0000-0002-3045-3604
Méndez, Vicenç|||0000-0002-2605-6606
Quiroz-Juárez, Mario A.|||0000-0002-5995-9510
Ortega, Adrian
Benet, Luis|||0000-0002-8470-9054
Perez-Leija, Armando
Busch, Kurt
author_role author
author2 Méndez, Vicenç|||0000-0002-2605-6606
Quiroz-Juárez, Mario A.|||0000-0002-5995-9510
Ortega, Adrian
Benet, Luis|||0000-0002-8470-9054
Perez-Leija, Armando
Busch, Kurt
author2_role author
author
author
author
author
author
dc.subject.none.fl_str_mv Many-particle quantum correlations
Quantum networks
Off-diagonal dynamical disorder
topic Many-particle quantum correlations
Quantum networks
Off-diagonal dynamical disorder
description Quantum walks in dynamically-disordered networks have become an invaluable tool for understanding the physics of open quantum systems. Although much work has been carried out considering networks affected by diagonal disorder, it is of fundamental importance to study the effects of fluctuating couplings. This is particularly relevant in materials science models, where the interaction forces may change depending on the species of the atoms being linked. In this work, we make use of stochastic calculus to derive a master equation for the dynamics of one and two non-interacting correlated particles in tight-binding networks affected by off-diagonal dynamical disorder. We show that the presence of noise in the couplings of a quantum network creates a pure-dephasing-like process that destroys all coherences in the single-particle Hilbert subspace. Moreover, we show that when two or more correlated particles propagate in the network, coherences accounting for particle indistinguishability are robust against the impact of off-diagonal noise, thus showing that it is possible, in principle, to find specific conditions for which many indistinguishable particles can traverse stochastically-coupled networks without losing their ability to interfere.
publishDate 2019
dc.date.none.fl_str_mv 2
2019-01-01
2019
2019-01-01
dc.type.none.fl_str_mv Article
http://purl.org/coar/resource_type/c_6501
VoR
http://purl.org/coar/version/c_970fb48d4fbd8a85
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://ddd.uab.cat/record/223940
https://dx.doi.org/urn:doi:10.1088/1367-2630/ab1c79
url https://ddd.uab.cat/record/223940
https://dx.doi.org/urn:doi:10.1088/1367-2630/ab1c79
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.relation.none.fl_str_mv Agencia Estatal de Investigación https://doi.org/10.13039/501100011033 CGL2016-78156-C2-2-R
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
https://creativecommons.org/licenses/by/4.0/
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
https://creativecommons.org/licenses/by/4.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:Dipòsit Digital de Documents de la UAB
instname:Universitat Autònoma de Barcelona
instname_str Universitat Autònoma de Barcelona
reponame_str Dipòsit Digital de Documents de la UAB
collection Dipòsit Digital de Documents de la UAB
repository.name.fl_str_mv
repository.mail.fl_str_mv
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