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Coherent acceleration and Landau-Zener tunneling of Bose-Einstein condensates in 1-D optical lattices

O. Morsch·J. H. Müller·M. Cristiani·E. Arimondo
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Abstract

We have loaded Bose-Einstein condensates into one-dimensional, off-resonant optical lattices and accelerated them by chirping the frequency difference between the two lattice beams. For small values of the lattice well-depth, Bloch oscillations were observed. Landau-Zener tunneling out of the lowest lattice band, leading to a breakdown of the oscillations, was also studied. In order to allow in-trap measurements of these phenomena, we dynamically compensated for the intrinsic micromotion of the atoms in our time-orbiting potential trap.

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O. Morsch, J. H. Müller, M. Cristiani, E. Arimondo. 2001-03-22. Coherent acceleration and Landau-Zener tunneling of Bose-Einstein condensates in 1-D optical lattices. https://arxiv.org/abs/cond-mat/0103466

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