Towards a Bose-Glass of ultracold atoms in a disordered crystal of light

Details Towards a Bose-Glass of ultracold atoms in a disordered crystal of light Towards a Bose-Glass of ultracold atoms in a disordered crystal of light

2006-03-24

arxiv.org/abs/cond-mat/0603655v2

Physics

Condensed Matter

Other Condensed Matter

4 pages, 5 figures

Scientific paper

Starting from one-dimensional Mott Insulators, we use a bichromatic optical lattice to add controlled disorder to an ideal optical crystal where bosonic atoms are pinned by repulsive interactions. Increasing disorder, we observe a broadening of the Mott Insulator resonances and the transition to an insulating state with a flat density of excitations, suggesting the formation of a Bose-Glass.

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