Vortex macroscopic superpositions in ultracold bosons in a double-well potential

We study macroscopic superpositions in the orbital rather than the spatial degrees of freedom, in a three-dimensional double-well system. We show that the ensuing dynamics of N interacting excited ultracold bosons, which in general requires at least eight single-particle modes and N+7 N Fock vectors...

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Detalles Bibliográficos
Autores: Garcia-March, M. A., Carr, Lincoln D.
Tipo de recurso: artículo
Fecha de publicación:2015
País:España
Institución:Universitat Politècnica de Catalunya (UPC)
Repositorio:UPCommons. Portal del coneixement obert de la UPC
Idioma:inglés
OAI Identifier:oai:upcommons.upc.edu:2117/78739
Acceso en línea:https://hdl.handle.net/2117/78739
Access Level:acceso abierto
Palabra clave:Bosons
bosons
Àrees temàtiques de la UPC::Física
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spelling Vortex macroscopic superpositions in ultracold bosons in a double-well potentialGarcia-March, M. A.Carr, Lincoln D.BosonsbosonsBosonsÀrees temàtiques de la UPC::FísicaWe study macroscopic superpositions in the orbital rather than the spatial degrees of freedom, in a three-dimensional double-well system. We show that the ensuing dynamics of N interacting excited ultracold bosons, which in general requires at least eight single-particle modes and N+7 N Fock vectors, is described by a surprisingly small set of many-body states. An initial state with half the atoms in each well, and purposely excited in one of them, gives rise to the tunneling of axisymmetric and transverse vortex structures. We show that transverse vortices tunnel orders of magnitude faster than axisymmetric ones and are therefore more experimentally accessible. The tunneling process generates macroscopic superpositions only distinguishable by their orbital properties and within experimentally realistic times.Peer Reviewed20152015-03-2320152015-11-03journal articlehttp://purl.org/coar/resource_type/c_6501AMhttp://purl.org/coar/version/c_ab4af688f83e57aainfo:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/2117/78739reponame:UPCommons. Portal del coneixement obert de la UPCinstname:Universitat Politècnica de Catalunya (UPC)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2Attribution-NonCommercial-NoDerivs 3.0 Spainhttp://creativecommons.org/licenses/by-nc-nd/3.0/es/info:eu-repo/semantics/openAccessoai:upcommons.upc.edu:2117/787392026-05-27T15:37:01Z
dc.title.none.fl_str_mv Vortex macroscopic superpositions in ultracold bosons in a double-well potential
title Vortex macroscopic superpositions in ultracold bosons in a double-well potential
spellingShingle Vortex macroscopic superpositions in ultracold bosons in a double-well potential
Garcia-March, M. A.
Bosons
bosons
Bosons
Àrees temàtiques de la UPC::Física
title_short Vortex macroscopic superpositions in ultracold bosons in a double-well potential
title_full Vortex macroscopic superpositions in ultracold bosons in a double-well potential
title_fullStr Vortex macroscopic superpositions in ultracold bosons in a double-well potential
title_full_unstemmed Vortex macroscopic superpositions in ultracold bosons in a double-well potential
title_sort Vortex macroscopic superpositions in ultracold bosons in a double-well potential
dc.creator.none.fl_str_mv Garcia-March, M. A.
Carr, Lincoln D.
author Garcia-March, M. A.
author_facet Garcia-March, M. A.
Carr, Lincoln D.
author_role author
author2 Carr, Lincoln D.
author2_role author
dc.subject.none.fl_str_mv Bosons
bosons
Bosons
Àrees temàtiques de la UPC::Física
topic Bosons
bosons
Bosons
Àrees temàtiques de la UPC::Física
description We study macroscopic superpositions in the orbital rather than the spatial degrees of freedom, in a three-dimensional double-well system. We show that the ensuing dynamics of N interacting excited ultracold bosons, which in general requires at least eight single-particle modes and N+7 N Fock vectors, is described by a surprisingly small set of many-body states. An initial state with half the atoms in each well, and purposely excited in one of them, gives rise to the tunneling of axisymmetric and transverse vortex structures. We show that transverse vortices tunnel orders of magnitude faster than axisymmetric ones and are therefore more experimentally accessible. The tunneling process generates macroscopic superpositions only distinguishable by their orbital properties and within experimentally realistic times.
publishDate 2015
dc.date.none.fl_str_mv 2015
2015-03-23
2015
2015-11-03
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
AM
http://purl.org/coar/version/c_ab4af688f83e57aa
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/2117/78739
url https://hdl.handle.net/2117/78739
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
Attribution-NonCommercial-NoDerivs 3.0 Spain
http://creativecommons.org/licenses/by-nc-nd/3.0/es/
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
Attribution-NonCommercial-NoDerivs 3.0 Spain
http://creativecommons.org/licenses/by-nc-nd/3.0/es/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:UPCommons. Portal del coneixement obert de la UPC
instname:Universitat Politècnica de Catalunya (UPC)
instname_str Universitat Politècnica de Catalunya (UPC)
reponame_str UPCommons. Portal del coneixement obert de la UPC
collection UPCommons. Portal del coneixement obert de la UPC
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