Matter wave scattering on an amplitude-modulated optical lattice
Abstract
We experimentally study the scattering of guided matter waves on an amplitude-modulated optical lattice. We observe different types of frequency-dependent dips in the asymptotic output density distribution. Their positions are compared quantitatively with numerical simulations. A semiclassical model that combines \emph{local} Floquet-Bloch bands analysis and Landau-Zener transitions provides a simple picture of the observed phenomena in terms of elementary \emph{Floquet photon} absorption-emission processes and envelope-induced reflections. Finally, we propose and demonstrate the use of this technique with a bichromatic modulation to design a tunable sub-recoil velocity filter. Such a filter can be transposed to all species since it does not rely on a specific internal level configuration of the atoms.
Cite
@article{arxiv.1206.3687,
title = {Matter wave scattering on an amplitude-modulated optical lattice},
author = {Pierrick Cheiney and Charlotte Fabre and François Vermersch and Giovanni Luca Gattobigio and Renaud Mathevet and Thierry Lahaye and David Guery-Odelin},
journal= {arXiv preprint arXiv:1206.3687},
year = {2013}
}