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arXiv · 1912.06041

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

J. Sanz·A. Frölian·C. S. Chisholm·C. R. Cabrera·L. Tarruell
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Abstract

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.

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J. Sanz, A. Frölian, C. S. Chisholm, C. R. Cabrera, L. Tarruell. 2019-12-12. Interaction control and bright solitons in coherently-coupled Bose-Einstein condensates. https://doi.org/10.1103/physrevlett.128.013201

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