Surface-modified Wannier-Stark states in a 1D optical lattice
Abstract
We study the energy spectrum of atoms trapped in a vertical 1D optical lattice in close proximity to a reflective surface. We propose an effective model to describe the interaction between the atoms and the surface at any distance. Our model includes the long-range Casimir-Polder potential together with a short-range Lennard-Jones potential, which are considered non-perturbatively with respect to the optical lattice potential. We find an intricate energy spectrum which contains a pair of loosely-bound states localized close to the surface in addition to a surface-modified Wannier-Stark ladder at long distances. Atomic interferometry involving those loosely-bound atom-surface states is proposed to probe the adsorption dynamics of atoms on mirrors.
Cite
@article{arxiv.1609.06934,
title = {Surface-modified Wannier-Stark states in a 1D optical lattice},
author = {A. Maury and M. Donaire and M. -P. Gorza and A. Lambrecht and R. Guérout},
journal= {arXiv preprint arXiv:1609.06934},
year = {2016}
}