Photon-assisted tunneling in optical lattices : Ballistic transport of interacting boson pairs

Weiss, C.; Breuer, H.-P.

Abstract

In a recent experiment [Phys. Rev. Lett. 100, 040404 (2008)], an analog of photon-assisted tunneling was observed for a Bose-Einstein condensate in an optical lattice subject to a constant force plus a sinusoidal shaking. Contrary to previous theoretical predictions, the width of the condensate was measured to be proportional to the square of the effective tunneling matrix element, rather than a linear dependence. For a simple model of two interacting bosons in a one-dimensional optical lattice, both analytical and numerical calculations indicate that such a transition from a linear to a quadratic dependence can be interpreted through the ballistic transport and the corresponding exact dispersion relation of bound boson pairs.

Citation

Weiss, C., & Breuer, H. (2009). Photon-assisted tunneling in optical lattices : Ballistic transport of interacting boson pairs. Physical Review A, 79(2), https://doi.org/10.1103/physreva.79.023608

• Journal Article Type: Article
• Publication Date: Feb 6, 2009
• Deposit Date: Jul 29, 2014
• Journal: Physical Review A - Atomic, Molecular, and Optical Physics
• Print ISSN: 1050-2947
• Electronic ISSN: 1094-1622
• Publisher: American Physical Society
• Peer Reviewed: Peer Reviewed
• Volume: 79
• Issue: 2
• DOI: https://doi.org/10.1103/physreva.79.023608
• Public URL: https://durham-repository.worktribe.com/output/1422861