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Paper detail

Observation of Density-Induced Tunneling

We study the dynamics of bosonic atoms in a tilted one-dimensional optical lattice and report on the first direct observation of density-induced tunneling. We show that the interaction affects the time evolution of the doublon oscillation via density-induced tunneling and pinpoint its density- and interaction-dependence. The experimental data for different lattice depths are in good agreement with our theoretical model. Furthermore, resonances caused by second-order tunneling processes are studied, where the density-induced tunneling breaks the symmetric behavior for attractive and repulsive interactions predicted by the Hubbard model.

preprint2014arXivOpen access
Ole JürgensenFlorian MeinertManfred J. MarkHanns-Christoph NägerlDirk-Sören Lühmann
cond-mat.quant-gas
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Ole JürgensenFlorian MeinertManfred J. MarkHanns-Christoph NägerlDirk-Sören Lühmann

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