Dynamics of Bloch Oscillations in Disordered Lattice Potentials

Details Dynamics of Bloch Oscillations in Disordered Lattice Potentials Dynamics of Bloch Oscillations in Disordered Lattice Potentials

2007-07-20

arxiv.org/abs/0707.3131v1

Physics

Condensed Matter

Other Condensed Matter

Scientific paper

10.1103/PhysRevA.77.023610

We present a detailed analysis of the dynamics of Bloch oscillations of Bose-Einstein condensates in disordered lattice potentials. Due to the disorder and the interparticle interactions these oscillations undergo a dephasing, reflected in a damping of the center of mass oscillations, which should be observable under realistic experimental conditions. The interplay between interactions and disorder is far from trivial, ranging from an interaction-enhanced damping due to modulational instability for strong interactions, to an interaction-reduced damping due to a dynamical screening of the disorder potential.

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