Interaction control and bright solitons in coherently-coupled Bose-Einstein condensates

We demonstrate fast control of the interatomic interactions in a Bose-Einstein condensate by coherently coupling two atomic states with intra- and inter-state scattering lengths of opposite signs. We measure the elastic and inelastic scattering properties of the system and find good agreement with a...

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Bibliographic Details
Published in:arXiv.org 2019-12
Main Authors: Sanz, J, Frölian, A, Chisholm, C S, Cabrera, C R, Tarruell, L
Format: Article
Language:English
Subjects:
Atomic states
Bose-Einstein condensates
Coherent scattering
Elastic properties
Elastic scattering
Inelastic scattering
Matter & antimatter
Solitary waves
Online Access:Get full text
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Summary:We demonstrate fast control of the interatomic interactions in a Bose-Einstein condensate by coherently coupling two atomic states with intra- and inter-state scattering lengths of opposite signs. We measure the elastic and inelastic scattering properties of the system and find good agreement with a theoretical model describing the interactions between dressed states. In the attractive regime, we observe the formation of bright solitons formed by dressed-state atoms. Finally, we study the response of the system to an interaction quench from repulsive to attractive values, and observe how the resulting modulational instability develops into a bright soliton train.
ISSN:2331-8422
DOI:10.48550/arxiv.1912.06041