Resonant excitations of a Bose Einstein condensate in an optical lattice
Quantum Gases
2019-09-04 v1
Abstract
We investigate experimentally a Bose Einstein condensate placed in a 1D optical lattice whose phase or amplitude is modulated in a frequency range resonant with the first bands of the band structure. We study the combined effect of the strength of interactions and external confinement on the 1 and 2-phonon transitions. We identify lines immune or sensitive to atom-atom interactions. Experimental results are in good agreement with numerical simulations. Using the band mapping technique, we get a direct access to the populations that have undergone -phonon transitions for each modulation frequency.
Keywords
Cite
@article{arxiv.1808.00345,
title = {Resonant excitations of a Bose Einstein condensate in an optical lattice},
author = {C. Cabrera-Gutiérrez and E. Michon and M. Arnal and V. Brunaud and T. Kawalec and J. Billy and D. Guéry-Odelin},
journal= {arXiv preprint arXiv:1808.00345},
year = {2019}
}