Andreev-like reflections with cold atoms

Daley, Andrew and Zoller, P. and Trauzettel, B. (2008) Andreev-like reflections with cold atoms. Physical Review Letters, 100 (11). 110404-1-110404-4. ISSN 0031-9007

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    We propose a setup in which Andreev-like reflections predicted for 1D transport systems could be observed time dependently using cold atoms in a 1D optical lattice. Using time-dependent density matrix renormalization group methods we analyze the wave packet dynamics as a density excitation propagates across a boundary in the interaction strength. These phenomena exhibit good correspondence with predictions from Luttinger liquid models and could be observed in current experiments in the context of the Bose-Hubbard model.