Photon-Assisted Tunneling in a Biased Strongly Correlated Bose Gas
Abstract
We study the impact of coherently generated lattice photons on an atomic Mott insulator subjected to a uniform force. Analogous to an array of tunnel-coupled and biased quantum dots, we observe sharp, interaction-shifted photon-assisted tunneling resonances corresponding to tunneling one and two lattice sites either with or against the force, and resolve multiorbital shifts of these resonances. By driving a Landau-Zener sweep across such a resonance, we realize a quantum phase transition between a paramagnet and an antiferromagnet, and observe quench dynamics when the system is tuned to the critical point. Direct extensions will produce gauge fields and site-resolved spin flips, for topological physics and quantum computing.
Keywords
Cite
@article{arxiv.1105.4629,
title = {Photon-Assisted Tunneling in a Biased Strongly Correlated Bose Gas},
author = {Ruichao Ma and M. Eric Tai and Philipp M. Preiss and Waseem S. Bakr and Jonathan Simon and Markus Greiner},
journal= {arXiv preprint arXiv:1105.4629},
year = {2015}
}
Comments
4 pages, 4 figures