Stable Bloch Oscillations of Cold Atoms with Time-Dependent Interaction

We investigate Bloch oscillations of interacting cold atoms in a mean-field framework. In general, atom-atom interaction causes dephasing and destroys Bloch oscillations. Here we show that Bloch oscillations are persistent if the interaction is modulated harmonically with suitable frequency and phas...

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Detalles Bibliográficos
Autores: Gaul, C., de Paula Almeida Lima, Rodrigo, Díaz, E., Müller, C. A., Domínguez-Adame, F.
Tipo de recurso: artículo
Fecha de publicación:2009
País:España
Institución:Universidad de Castilla-La Mancha
Repositorio:RUIdeRA. Repositorio Institucional de la UCLM
OAI Identifier:oai:ruidera.uclm.es:10578/47437
Acceso en línea:https://publons.com/wos-op/publon/5791589/
https://hdl.handle.net/10578/47437
Access Level:acceso abierto
Palabra clave:Cold atoms
Stable Bloch oscillations
Time-dependent interaction
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spelling Stable Bloch Oscillations of Cold Atoms with Time-Dependent InteractionGaul, C.de Paula Almeida Lima, RodrigoDíaz, E.Müller, C. A.Domínguez-Adame, F.Cold atomsStable Bloch oscillationsTime-dependent interactionWe investigate Bloch oscillations of interacting cold atoms in a mean-field framework. In general, atom-atom interaction causes dephasing and destroys Bloch oscillations. Here we show that Bloch oscillations are persistent if the interaction is modulated harmonically with suitable frequency and phase. For other modulations, Bloch oscillations are rapidly damped. We explain this behavior in terms of collective coordinates whose Hamiltonian dynamics permits one to predict a whole family of stable solutions. In order to describe also the unstable cases, we carry out a stability analysis for Bogoliubov excitations. Using Floquet theory, we are able to predict the unstable modes as well as their growth rate, found to be in excellent agreement with numerical simulations.APS Journals202620262009info:eu-repo/semantics/articleapplication/pdfapplication/pdfhttps://publons.com/wos-op/publon/5791589/https://hdl.handle.net/10578/47437reponame:RUIdeRA. Repositorio Institucional de la UCLMinstname:Universidad de Castilla-La ManchaInglésMEC (Project MOSAICO)BSCH-UCM (Project PR34/07-15916)info:eu-repo/semantics/openAccessoai:ruidera.uclm.es:10578/474372026-05-27T07:36:41Z
dc.title.none.fl_str_mv Stable Bloch Oscillations of Cold Atoms with Time-Dependent Interaction
title Stable Bloch Oscillations of Cold Atoms with Time-Dependent Interaction
spellingShingle Stable Bloch Oscillations of Cold Atoms with Time-Dependent Interaction
Gaul, C.
Cold atoms
Stable Bloch oscillations
Time-dependent interaction
title_short Stable Bloch Oscillations of Cold Atoms with Time-Dependent Interaction
title_full Stable Bloch Oscillations of Cold Atoms with Time-Dependent Interaction
title_fullStr Stable Bloch Oscillations of Cold Atoms with Time-Dependent Interaction
title_full_unstemmed Stable Bloch Oscillations of Cold Atoms with Time-Dependent Interaction
title_sort Stable Bloch Oscillations of Cold Atoms with Time-Dependent Interaction
dc.creator.none.fl_str_mv Gaul, C.
de Paula Almeida Lima, Rodrigo
Díaz, E.
Müller, C. A.
Domínguez-Adame, F.
author Gaul, C.
author_facet Gaul, C.
de Paula Almeida Lima, Rodrigo
Díaz, E.
Müller, C. A.
Domínguez-Adame, F.
author_role author
author2 de Paula Almeida Lima, Rodrigo
Díaz, E.
Müller, C. A.
Domínguez-Adame, F.
author2_role author
author
author
author
dc.subject.none.fl_str_mv Cold atoms
Stable Bloch oscillations
Time-dependent interaction
topic Cold atoms
Stable Bloch oscillations
Time-dependent interaction
description We investigate Bloch oscillations of interacting cold atoms in a mean-field framework. In general, atom-atom interaction causes dephasing and destroys Bloch oscillations. Here we show that Bloch oscillations are persistent if the interaction is modulated harmonically with suitable frequency and phase. For other modulations, Bloch oscillations are rapidly damped. We explain this behavior in terms of collective coordinates whose Hamiltonian dynamics permits one to predict a whole family of stable solutions. In order to describe also the unstable cases, we carry out a stability analysis for Bogoliubov excitations. Using Floquet theory, we are able to predict the unstable modes as well as their growth rate, found to be in excellent agreement with numerical simulations.
publishDate 2009
dc.date.none.fl_str_mv 2009
2026
2026
dc.type.none.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://publons.com/wos-op/publon/5791589/
https://hdl.handle.net/10578/47437
url https://publons.com/wos-op/publon/5791589/
https://hdl.handle.net/10578/47437
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv MEC (Project MOSAICO)
BSCH-UCM (Project PR34/07-15916)
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv APS Journals
publisher.none.fl_str_mv APS Journals
dc.source.none.fl_str_mv reponame:RUIdeRA. Repositorio Institucional de la UCLM
instname:Universidad de Castilla-La Mancha
instname_str Universidad de Castilla-La Mancha
reponame_str RUIdeRA. Repositorio Institucional de la UCLM
collection RUIdeRA. Repositorio Institucional de la UCLM
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,812455

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