Directed coherent transport due to Bloch oscillation in two dimensions

Details Directed coherent transport due to Bloch oscillation in two dimensions Directed coherent transport due to Bloch oscillation in two dimensions

2011-02-12

arxiv.org/abs/1102.2470v1

Physics

Quantum Physics

4 pages, 2 figures

Scientific paper

10.1103/PhysRevA.82.025602

We point out that in higher dimensions, in contrast to the one dimensional case considered usually, Bloch oscillation driven by a static force can induce transport of the wave packet. The wave packet oscillates constantly, but on a larger time scale it drifts at a constant velocity permanently. As a noteworthy feature, the net transport in the long run is always normal to the external force and thus controlled by it. We verify this prediction numerically and discuss its experimental realization both with cold atoms in optical lattices and with two dimensional photonic lattices.

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