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Detecting quantum backflow by the density of a Bose-Einstein condensate

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dc.affiliation.dptoUC3M. Departamento de Físicaes
dc.affiliation.grupoinvUC3M. Grupo de Investigación: Materiales Nano-Estructurados y Multifuncionaleses
dc.contributor.authorPalmero, Mikel
dc.contributor.authorTorrontegui Muñoz, Erik
dc.contributor.authorMuga, Juan Gonzalo
dc.contributor.authorModugno, Michelle
dc.date.accessioned2021-03-15T11:22:44Z
dc.date.available2021-03-15T11:22:44Z
dc.date.issued2013-05
dc.description.abstractQuantum backflow is a classically forbidden effect consisting of a negative flux for states with negligible negative-momentum components. It has never been observed experimentally so far. We derive a general relation that connects backflow with a critical value of the particle density, paving the way for the detection of backflow by a density measurement. To this end, we propose an explicit scheme with Bose-Einstein condensates, at reach with current experimental technologies. Remarkably, the application of a positive-momentum kick, via a Bragg pulse, to a condensate with a positive velocity may cause a current flow in the negative direction.en
dc.description.sponsorshipM. M. is grateful to L. Fallani and C. Fort for useful discussions and valuable suggestions. We acknowledge funding by Grants No. FIS2012-36673-C03-01 and No. IT472-10 and by the UPV/EHU program UFI 11/55. M. P. and E. T. acknowledge support through fellowships by UPV/EHU.en
dc.format.extent5
dc.identifier.bibliographicCitationPalmero, M., Torrontegui, E., Muga, J. G. y Modugno, M. (2013). Detecting quantum backflow by the density of a Bose-Einstein condensate. Physical Review A, 87(5).en
dc.identifier.doihttp://dx.doi.org/10.1103/PhysRevA.87.053618
dc.identifier.issn1050-2947
dc.identifier.publicationfirstpage053618-1
dc.identifier.publicationissue5
dc.identifier.publicationlastpage053618-5
dc.identifier.publicationtitlePhysical Review Aen
dc.identifier.publicationvolume87
dc.identifier.urihttps://hdl.handle.net/10016/32139
dc.identifier.uxxiAR/0000026562
dc.language.isoeng
dc.publisherAmerican Physical Societyen
dc.rights©2013 American Physical Societyen
dc.rights.accessRightsopen accessen
dc.subject.ecienciaFísicaes
dc.titleDetecting quantum backflow by the density of a Bose-Einstein condensateen
dc.typeresearch article*
dc.type.hasVersionVoR*
dspace.entity.typePublication
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