Precision Measurements on a Tunable Mott Insulator of Ultracold Atoms
Quantum Physics
2011-11-23 v1 Quantum Gases
Abstract
We perform precision measurements on a Mott-insulator quantum state of ultracold atoms with tunable interactions. We probe the dependence of the superfluid-to-Mott-insulator transition on the interaction strength and explore the limits of the standard Bose-Hubbard model description. By tuning the on-site interaction energies to values comparable to the interband separation, we are able to quantitatively measure number-dependent shifts in the excitation spectrum caused by effective multi-body interactions.
Keywords
Cite
@article{arxiv.1107.1803,
title = {Precision Measurements on a Tunable Mott Insulator of Ultracold Atoms},
author = {M. J. Mark and E. Haller and K. Lauber and J. G. Danzl and A. J. Daley and H. -C. Nägerl},
journal= {arXiv preprint arXiv:1107.1803},
year = {2011}
}
Comments
4 pages, 4 figures