Quantum Energy Current Induced Coherence in a Spin Chain under Non-Markovian Environments

We investigate the time-dependent behaviour of the energy current between a quantum spin chain and its surrounding non-Markovian and finite temperature baths, together with its relationship to the coherence dynamics of the system. To be specific, both the system and the baths are assumed to be initi...

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Autores: Ablimit, Arapat, He, Run-Hong, Xie, Yang-Yang, Wu, Lian-Ao, Wang, Zhao-Ming
Tipo de recurso: artículo
Fecha de publicación:2022
País:España
Institución:Universidad del País Vasco
Repositorio:Addi. Archivo Digital para la Docencia y la Investigación
OAI Identifier:oai:addi.ehu.eus:10810/58465
Acceso en línea:http://hdl.handle.net/10810/58465
Access Level:acceso abierto
Palabra clave:quantum coherence
energy current
non-Markovian dynamics
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spelling Quantum Energy Current Induced Coherence in a Spin Chain under Non-Markovian EnvironmentsAblimit, ArapatHe, Run-HongXie, Yang-YangWu, Lian-AoWang, Zhao-Mingquantum coherenceenergy currentnon-Markovian dynamicsWe investigate the time-dependent behaviour of the energy current between a quantum spin chain and its surrounding non-Markovian and finite temperature baths, together with its relationship to the coherence dynamics of the system. To be specific, both the system and the baths are assumed to be initially in thermal equilibrium at temperature Ts and Tb, respectively. This model plays a fundamental role in study of quantum system evolution towards thermal equilibrium in an open system. The non-Markovian quantum state diffusion (NMQSD) equation approach is used to calculate the dynamics of the spin chain. The effects of non-Markovianity, temperature difference and system-bath interaction strength on the energy current and the corresponding coherence in cold and warm baths are analyzed, respectively. We show that the strong non-Markovianity, weak system-bath interaction and low temperature difference will help to maintain the system coherence and correspond to a weaker energy current. Interestingly, the warm baths destroy the coherence while the cold baths help to build coherence. Furthermore, the effects of the Dzyaloshinskii–Moriya (DM) interaction and the external magnetic field on the energy current and coherence are analyzed. Both energy current and coherence will change due to the increase of the system energy induced by the DM interaction and magnetic field. Significantly, the minimal coherence corresponds to the critical magnetic field which causes the first order phase transition.This research was funded by Natural Science Foundation of Shandong Province grant number ZR2021LLZ004, and grant PID2021-126273NB-I00 funded by MCIN/AEI/10.13039/501100011033, and by “ERDF A way of making Europe” and the Basque Government through grant number IT1470-22.MDPI2022202220222022info:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10810/58465reponame:Addi. Archivo Digital para la Docencia y la Investigacióninstname:Universidad del País VascoInglésinfo:eu-repo/grantAgreement/MICINN/PID2021-126273NB-I00/https://www.mdpi.com/1099-4300/24/10/1406info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by/4.0/© 2022 by the authors.Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/ 4.0/).oai:addi.ehu.eus:10810/584652026-06-18T09:23:17Z
dc.title.none.fl_str_mv Quantum Energy Current Induced Coherence in a Spin Chain under Non-Markovian Environments
title Quantum Energy Current Induced Coherence in a Spin Chain under Non-Markovian Environments
spellingShingle Quantum Energy Current Induced Coherence in a Spin Chain under Non-Markovian Environments
Ablimit, Arapat
quantum coherence
energy current
non-Markovian dynamics
title_short Quantum Energy Current Induced Coherence in a Spin Chain under Non-Markovian Environments
title_full Quantum Energy Current Induced Coherence in a Spin Chain under Non-Markovian Environments
title_fullStr Quantum Energy Current Induced Coherence in a Spin Chain under Non-Markovian Environments
title_full_unstemmed Quantum Energy Current Induced Coherence in a Spin Chain under Non-Markovian Environments
title_sort Quantum Energy Current Induced Coherence in a Spin Chain under Non-Markovian Environments
dc.creator.none.fl_str_mv Ablimit, Arapat
He, Run-Hong
Xie, Yang-Yang
Wu, Lian-Ao
Wang, Zhao-Ming
author Ablimit, Arapat
author_facet Ablimit, Arapat
He, Run-Hong
Xie, Yang-Yang
Wu, Lian-Ao
Wang, Zhao-Ming
author_role author
author2 He, Run-Hong
Xie, Yang-Yang
Wu, Lian-Ao
Wang, Zhao-Ming
author2_role author
author
author
author
dc.subject.none.fl_str_mv quantum coherence
energy current
non-Markovian dynamics
topic quantum coherence
energy current
non-Markovian dynamics
description We investigate the time-dependent behaviour of the energy current between a quantum spin chain and its surrounding non-Markovian and finite temperature baths, together with its relationship to the coherence dynamics of the system. To be specific, both the system and the baths are assumed to be initially in thermal equilibrium at temperature Ts and Tb, respectively. This model plays a fundamental role in study of quantum system evolution towards thermal equilibrium in an open system. The non-Markovian quantum state diffusion (NMQSD) equation approach is used to calculate the dynamics of the spin chain. The effects of non-Markovianity, temperature difference and system-bath interaction strength on the energy current and the corresponding coherence in cold and warm baths are analyzed, respectively. We show that the strong non-Markovianity, weak system-bath interaction and low temperature difference will help to maintain the system coherence and correspond to a weaker energy current. Interestingly, the warm baths destroy the coherence while the cold baths help to build coherence. Furthermore, the effects of the Dzyaloshinskii–Moriya (DM) interaction and the external magnetic field on the energy current and coherence are analyzed. Both energy current and coherence will change due to the increase of the system energy induced by the DM interaction and magnetic field. Significantly, the minimal coherence corresponds to the critical magnetic field which causes the first order phase transition.
publishDate 2022
dc.date.none.fl_str_mv 2022
2022
2022
2022
dc.type.none.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/10810/58465
url http://hdl.handle.net/10810/58465
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv info:eu-repo/grantAgreement/MICINN/PID2021-126273NB-I00/
https://www.mdpi.com/1099-4300/24/10/1406
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by/4.0/
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by/4.0/
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv MDPI
publisher.none.fl_str_mv MDPI
dc.source.none.fl_str_mv reponame:Addi. Archivo Digital para la Docencia y la Investigación
instname:Universidad del País Vasco
instname_str Universidad del País Vasco
reponame_str Addi. Archivo Digital para la Docencia y la Investigación
collection Addi. Archivo Digital para la Docencia y la Investigación
repository.name.fl_str_mv
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