Mainz 2017 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 53: Poster: Quantum Optics and Photonics III
Q 53.16: Poster
Donnerstag, 9. März 2017, 17:00–19:00, P OG2
Transport dynamics in optical lattices with flux — •Ana Hudomal1, Ivana Vasić1, Walter Hofstetter2, and Antun Balaž1 — 1Scientific Computing Laboratory, Center for the Study of Complex Systems, Institute of Physics Belgrade, University of Belgrade, Serbia — 2Institut für Theoretische Physik, Johann Wolfgang Goethe-Universität, Frankfurt am Main, Germany
Recent cold atom experiments have realized artificial gauge fields in periodically modulated optical lattices [1,2]. We study the dynamics of atomic clouds in these systems by performing numerical simulations using the full time-dependent Hamiltonian and comparing these results to the semiclassical approximation. Under constant external force, atoms in optical lattices with flux exhibit an anomalous velocity in the transverse direction. We investigate in detail how this transverse drift is related to the Berry curvature and Chern number, taking into account realistic experimental conditions.
[1] G. Jotzu et al., Nature 515, 237 (2014).
[2] M. Aidelsburger et al., Nature Phys. 11, 162 (2015).