Bound states in ultrastrong waveguide QED

We discuss the properties of bound states in finite-bandwidth waveguide QED beyond the rotating wave approximation or excitation-number-conserving light-matter coupling models. Therefore, we extend the standard calculations to a broader range of light-matter strengths, in particular, in the so-calle...

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Detalles Bibliográficos
Autores: Román-Roche, J., Sánchez-Burillo, E., Zueco, D.
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2020
País:España
Institución:Universidad de Zaragoza
Repositorio:Zaguán. Repositorio Digital de la Universidad de Zaragoza
OAI Identifier:oai:zaguan.unizar.es:95530
Acceso en línea:http://zaguan.unizar.es/record/95530
Access Level:acceso abierto
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spelling Bound states in ultrastrong waveguide QEDRomán-Roche, J.Sánchez-Burillo, E.Zueco, D.We discuss the properties of bound states in finite-bandwidth waveguide QED beyond the rotating wave approximation or excitation-number-conserving light-matter coupling models. Therefore, we extend the standard calculations to a broader range of light-matter strengths, in particular, in the so-called ultrastrong coupling regime. We do this using the polaron technique. Our main results are as follows: We compute the spontaneous emission rate, which is renormalized as compared with the Fermi golden rule formula. We generalize the existence criteria for bound states, their properties, and their role in the qubit thermalization. We discuss effective spin-spin interactions through both vacuum fluctuations and bound states. Finally, we sketch a perfect state-transfer protocol among distant emitters mediated by bound states.2020info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttp://zaguan.unizar.es/record/95530reponame:Zaguán. Repositorio Digital de la Universidad de Zaragozainstname:Universidad de ZaragozaInglésinfo:eu-repo/grantAgreement/EC/H2020/742102This project has received funding from the European Union’s Horizon 2020 research and innovation program under grant agreement No H2020 742102-QUENOCOBAinfo:eu-repo/grantAgreement/ES/MCIU/MAT2017-88358-C3-1-Rinfo:eu-repo/grantAgreement/EUR/MOLSPIN-COST/CA15128info:eu-repo/semantics/openAccessoai:zaguan.unizar.es:955302026-05-29T13:59:51Z
dc.title.none.fl_str_mv Bound states in ultrastrong waveguide QED
title Bound states in ultrastrong waveguide QED
spellingShingle Bound states in ultrastrong waveguide QED
Román-Roche, J.
title_short Bound states in ultrastrong waveguide QED
title_full Bound states in ultrastrong waveguide QED
title_fullStr Bound states in ultrastrong waveguide QED
title_full_unstemmed Bound states in ultrastrong waveguide QED
title_sort Bound states in ultrastrong waveguide QED
dc.creator.none.fl_str_mv Román-Roche, J.
Sánchez-Burillo, E.
Zueco, D.
author Román-Roche, J.
author_facet Román-Roche, J.
Sánchez-Burillo, E.
Zueco, D.
author_role author
author2 Sánchez-Burillo, E.
Zueco, D.
author2_role author
author
description We discuss the properties of bound states in finite-bandwidth waveguide QED beyond the rotating wave approximation or excitation-number-conserving light-matter coupling models. Therefore, we extend the standard calculations to a broader range of light-matter strengths, in particular, in the so-called ultrastrong coupling regime. We do this using the polaron technique. Our main results are as follows: We compute the spontaneous emission rate, which is renormalized as compared with the Fermi golden rule formula. We generalize the existence criteria for bound states, their properties, and their role in the qubit thermalization. We discuss effective spin-spin interactions through both vacuum fluctuations and bound states. Finally, we sketch a perfect state-transfer protocol among distant emitters mediated by bound states.
publishDate 2020
dc.date.none.fl_str_mv 2020
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 http://zaguan.unizar.es/record/95530
url http://zaguan.unizar.es/record/95530
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv info:eu-repo/grantAgreement/EC/H2020/742102
This project has received funding from the European Union’s Horizon 2020 research and innovation program under grant agreement No H2020 742102-QUENOCOBA
info:eu-repo/grantAgreement/ES/MCIU/MAT2017-88358-C3-1-R
info:eu-repo/grantAgreement/EUR/MOLSPIN-COST/CA15128
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv
publisher.none.fl_str_mv
dc.source.none.fl_str_mv reponame:Zaguán. Repositorio Digital de la Universidad de Zaragoza
instname:Universidad de Zaragoza
instname_str Universidad de Zaragoza
reponame_str Zaguán. Repositorio Digital de la Universidad de Zaragoza
collection Zaguán. Repositorio Digital de la Universidad de Zaragoza
repository.name.fl_str_mv
repository.mail.fl_str_mv
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