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

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dc.contributor.authorGarcia-March, Miguel A.
dc.contributor.authorCarr, Lincoln D.
dc.contributor.funderNational Science Foundation
dc.contributor.funderAir Force Office of Scientific Research
dc.contributor.funderAlexander von Humboldt-Stiftung
dc.contributor.funderZentrum für Quantendynamik, Universität Heidelberg
dc.contributor.funderUS-UK Fulbright Commission
dc.contributor.funderMinistério da Educação
dc.contributor.funderEuropean Research Council
dc.contributor.funderFP7 Information and Communication Technologies
dc.contributor.funderJohn Templeton Foundation
dc.contributor.funderMinisterio de Ciencia e Innovación
dc.contributor.funderDirección General de Investigación Científica y Técnica
dc.contributor.funderGeneralitat de Catalunya
dc.date.accessioned2017-08-22T08:56:56Z
dc.date.available2017-08-22T08:56:56Z
dc.date.issued2015
dc.description.abstractWe 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.sponsorshipNational 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.description.statusPeer revieweden
dc.description.versionPublished Versionen
dc.format.mimetypeapplication/pdfen
dc.identifier.articleid33626
dc.identifier.citationGarcia-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.91.033626en
dc.identifier.doi10.1103/PhysRevA.91.033626
dc.identifier.issn1050-2947
dc.identifier.issn1094-1622
dc.identifier.issued3
dc.identifier.journaltitlePhysical Review Aen
dc.identifier.urihttps://hdl.handle.net/10468/4477
dc.identifier.volume91
dc.language.isoenen
dc.publisherAmerican Physical Societyen
dc.relation.projectinfo:eu-repo/grantAgreement/EC/FP7::SP2::ERC/339106/EU/Open SYstems RevISited: From Brownian motion to quantum simulators/OSYRIS
dc.relation.projectinfo:eu-repo/grantAgreement/EC/FP7::SP1::ICT/600645/EU/Simulators and Interfaces with Quantum Systems/SIQS
dc.relation.projectinfo:eu-repo/grantAgreement/EC/FP7::SP1::ICT/323714/EU/Emulators of Quantum Frustrated Magnetism/EQUAM
dc.relation.urihttps://journals.aps.org/pra/abstract/10.1103/PhysRevA.91.033626
dc.rights© 2015, American Physical Societyen
dc.subjectBose-Einstein condensateen
dc.subjectOptical latticesen
dc.subjectStatesen
dc.titleVortex macroscopic superpositions in ultracold bosons in a double-well potentialen
dc.typeArticle (peer-reviewed)en
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