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Tunable three-body interactions in driven two-component Bose-Einstein condensates

Abstract : We propose and demonstrate the appearance of an effective attractive three-body interaction in coherently-driven two-component Bose Einstein condensates. It originates from the spinor degree of freedom that is affected by a two-body mean-field shift of the driven transition frequency. Importantly, its strength can be controlled with the Rabi-coupling strength and it does not come with additional losses. In the experiment, the three-body interactions are adjusted to play a predominant role in the equation of state of a cigar-shaped trapped condensate. This is confirmed though two striking observations: a downshift of the radial breathing mode frequency and the radial collapses for positive values of the dressed-state scattering length.
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Preprints, Working Papers, ...
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https://hal.archives-ouvertes.fr/hal-03455531
Contributor : Thomas Bourdel Connect in order to contact the contributor
Submitted on : Thursday, December 2, 2021 - 11:32:36 AM
Last modification on : Tuesday, January 4, 2022 - 6:38:19 AM

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  • HAL Id : hal-03455531, version 1
  • ARXIV : 2112.01782

Citation

A. Hammond, L. Lavoine, Thomas Bourdel. Tunable three-body interactions in driven two-component Bose-Einstein condensates. 2021. ⟨hal-03455531⟩

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