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

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

Authors

C. Weiss

H.-P. Breuer



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
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


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