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Title: Transverse Josephson vortices and localized states in stacked Bose-Einstein condensates
Author: Gil Granados, Juan Antonio
Muñoz Mateo, Antonio
Guilleumas, Montserrat
Viñas Gausí, Xavier
Keywords: Condensació de Bose-Einstein
Ones no lineals
Efecte túnel
Bose-Einstein condensation
Nonlinear waves
Tunneling (Physics)
Issue Date: 17-Apr-2019
Publisher: Institute of Physics Pub.
Abstract: The stacks of Bose-Einstein condensates coupled by long Josephson junctions present a richphenomenology feasible to experimental realization and specially suitable for technologicalapplications as the nonlinear-optics and superconducting analogs have already proved. Among this,we show that transverse Bloch waves excited in arrays of one-dimensional coupled condensates cancarry tunneling superflows whose dynamical stability depends on the quasimomentum. Across thestacks with periodic boundary conditions, forming closed ring-shaped systems, such Bloch states yieldtransverse Josephson vortices with a generic non-integer circulation in units ofh/m. Additionally, thesuperpositions of degenerate linear Bloch waves can suppress the supercurrents and give rise tofamilies of nonlinear standing-wave states with strong(transverse)spatial localization. Stable states ofthis type can also be found infinite size systems.
Note: Reproducció del document publicat a:
It is part of: New Journal of Physics, 2019, vol. 21, p. 043036
Related resource:
ISSN: 1367-2630
Appears in Collections:Articles publicats en revistes (Física Quàntica i Astrofísica)

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