Amphithéâtre Maurice Halbwachs, Site Marcelin Berthelot
En libre accès, dans la limite des places disponibles
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Résumé

Mixtures of Bose-Einstein condensates offer situations where the usually dominant mean-field energy can be reduced such that higher-order terms may play a dominant role in the equation of state. In this context, the case of two component coupled Bose-Einstein condensates will be specifically addressed. First, large attractive effective three-body interactions can be engineered with striking consequences [1]. Second, the beyond-mean field energy is precisely measured and is shown to be modified as compared to the uncoupled case [2].

Références

[1] A. Hammond, L. Lavoine, T. Bourdel, Tunable 3-body interactions in coherently driven two-component Bose-Einstein condensate, Phys. Rev. Lett. 128, 083401 (2022).

[2] L. Lavoine, A. Hammond, A. Recati, D.S. Petrov, T. Bourdel, Beyond-mean-field effects in Rabi-coupled two-component Bose-Einstein condensate, Phys. Rev. Lett. 127, 203402 (2021).

Intervenant(s)

Thomas Bourdel

Laboratoire Charles Fabry , Univ. Paris-Saclay, CNRS, Institut d'optique