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

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dc.contributor.author Garcia-March, Miguel A.
dc.contributor.author Carr, Lincoln D.
dc.date.accessioned 2017-08-22T08:56:56Z
dc.date.available 2017-08-22T08:56:56Z
dc.date.issued 2015
dc.identifier.citation Garcia-March, M. A. and Carr, L. D. (2015) 'Vortex macroscopic superpositions in ultracold bosons in a double-well potential', Physical Review A, 91(3), 033626 (9pp). doi: 10.1103/PhysRevA.91.033626 en
dc.identifier.volume 91
dc.identifier.issued 3
dc.identifier.issn 1050-2947
dc.identifier.issn 1094-1622
dc.identifier.uri http://hdl.handle.net/10468/4477
dc.identifier.doi 10.1103/PhysRevA.91.033626
dc.description.abstract 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. en
dc.description.sponsorship National Science Foundation (PHY-1306638); Air Force Office of Scientific Research (FA9550-14-1-0287); Ministerio de Ciencia e Innovación (FOQUS); Dirección General de Investigación Científica y Técnica (FIS2011-24154); Generalitat de Catalunya (2014SGR-401) en
dc.format.mimetype application/pdf en
dc.language.iso en en
dc.publisher American Physical Society en
dc.relation.uri https://journals.aps.org/pra/abstract/10.1103/PhysRevA.91.033626
dc.rights © 2015, American Physical Society en
dc.subject Bose-Einstein condensate en
dc.subject Optical lattices en
dc.subject States en
dc.title Vortex macroscopic superpositions in ultracold bosons in a double-well potential en
dc.type Article (peer-reviewed) en
dc.internal.authorcontactother Miguel-Angel Garcia-March, Physics, University College Cork, Cork, Ireland. +353-21-490-3000. Email: magmarch@phys.ucc.ie en
dc.internal.availability Full text available en
dc.description.version Published Version en
dc.internal.wokid WOS:000351507900014
dc.contributor.funder National Science Foundation
dc.contributor.funder Air Force Office of Scientific Research
dc.contributor.funder Alexander von Humboldt-Stiftung
dc.contributor.funder Zentrum für Quantendynamik, Universität Heidelberg
dc.contributor.funder US-UK Fulbright Commission
dc.contributor.funder Ministério da Educação
dc.contributor.funder European Research Council
dc.contributor.funder FP7 Information and Communication Technologies
dc.contributor.funder John Templeton Foundation
dc.contributor.funder Ministerio de Ciencia e Innovación
dc.contributor.funder Dirección General de Investigación Científica y Técnica
dc.contributor.funder Generalitat de Catalunya
dc.description.status Peer reviewed en
dc.identifier.journaltitle Physical Review A en
dc.internal.IRISemailaddress magmarch@phys.ucc.ie en
dc.identifier.articleid 33626
dc.relation.project info:eu-repo/grantAgreement/EC/FP7::SP2::ERC/339106/EU/Open SYstems RevISited: From Brownian motion to quantum simulators/OSYRIS
dc.relation.project info:eu-repo/grantAgreement/EC/FP7::SP1::ICT/600645/EU/Simulators and Interfaces with Quantum Systems/SIQS
dc.relation.project info:eu-repo/grantAgreement/EC/FP7::SP1::ICT/323714/EU/Emulators of Quantum Frustrated Magnetism/EQUAM


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