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Josephson tunnelling of dark solitons in a double-well potential


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dc.creator Susanto, Hadi
dc.creator Cuevas-Maraver, Jesús
dc.creator Krüger, Peter A. C. 2015-05-14T08:24:06Z 2015-05-14T08:24:06Z 2011
dc.identifier.issn 0953-4075 es
dc.description.abstract We study the dynamics of matter waves in an effectively one-dimensional Bose-Einstein condensate in a double-well potential. We consider in particular the case when one of the double wells confines excited states. Similar to the known ground state oscillations, the states can tunnel between the wells experiencing the physics known for electrons in a Josephson junction, or be self-trapped. As the existence of dark solitons in a harmonic trap is a continuation of such non-ground state excitations, one can view the Josephson-like oscillations as tunnellings of dark solitons. Numerical existence and stability analysis based on the full equation is performed, where it is shown that such tunnelling can be stable. Through a numerical path-following method, unstable tunnelling is also obtained in different parameter regions. A coupled-mode system is derived and compared to the numerical observations. Regions of (in)stability of Josephson tunnelling are discussed and highlighted. Finally, we outline an experimental scheme designed to explore such dark soliton dynamics in the laboratory. es
dc.description.sponsorship MICINN project FIS2008-04848 es
dc.format application/pdf es
dc.language.iso eng es
dc.relation.ispartof Journal of Physics B: Atomic, Molecular and Optical Physics, 44 (9), 095003 : 1-8 es
dc.rights Attribution-NonCommercial-NoDerivatives 4.0 Internacional *
dc.rights.uri *
dc.subject Solitons es
dc.subject potential theory (Physics) es
dc.subject Bose-Einstein condensation es
dc.subject Electronic excitation es
dc.subject Josephson effect es
dc.subject Tunneling (Physics) es
dc.subject Numerical analysis es
dc.title Josephson tunnelling of dark solitons in a double-well potential es
dc.type info:eu-repo/semantics/article es
dc.rights.accessrights info:eu-repo/semantics/openAccess es
dc.contributor.affiliation Universidad de Sevilla. Departamento de Física Aplicada I es
dc.relation.publisherversion es
dc.relation.publisherversion doi:10.1088/0953-4075/44/9/095003 es
dc.identifier.doi 10.1088/0953-4075/44/9/095003
dc.contributor.funder Ministerio de Ciencia e Innovación (MICIN). España
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