3:45–4:45 pm
GCIS W301 929 E. 57th Street
Abstract
Quantum gases are model quantum system permitting the exploration of novel quantum phases and/or quantum dynamics. In particular, mixtures of Bose-Einstein condensate offer situations where the usually dominant mean-field energy in weakly interacting systems can be reduced such that higher-order (beyond-mean-field) terms may play a dominant role in the equation of state. In this context, the case of two-component coupled Bose-Einstein condensate 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].
References:
[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).