Feshbach modulation spectroscopy
Abstract
In the vicinity of a Feshbach resonance, a system of ultracold atoms on an optical lattice undergoes rich physical transformations which involve molecule formation and hopping of molecules on the lattice and thus goes beyond a single-band Hubbard model description. We propose to probe the behavior of this system with a harmonic modulation of the magnetic field, and thus of the scattering length, across the Feshbach resonance, as an alternative to lattice-depth modulation spectroscopy. In the regime in which the single-band Hubbard model is still valid, we provide simulation data for this type of spectroscopy. The method may uncover a route towards the efficient creation of ultracold molecules and provides an alternate means for lattice modulation spectroscopy.
Cite
@article{arxiv.1408.0206,
title = {Feshbach modulation spectroscopy},
author = {A. Dirks and K. Mikelsons and H. R. Krishnamurthy and J. K. Freericks},
journal= {arXiv preprint arXiv:1408.0206},
year = {2015}
}
Comments
5 pages, 3 figures