Theoretical analysis of super-Bloch oscillations

Details Theoretical analysis of super-Bloch oscillations Theoretical analysis of super-Bloch oscillations

2011-02-03

arxiv.org/abs/1102.0599v2

Phys. Rev. A 83, 053627 (2011)

Physics

Condensed Matter

Quantum Gases

6 pages, 2 figures

Scientific paper

Several recent studies have investigated the dynamics of cold atoms in optical lattices subject to AC forcing; the theoretically predicted renormalization of the tunneling amplitudes has been verified experimentally. Recent observations include global motion of the atom cloud, such as giant "Super-Bloch Oscillations" (SBOs). We show that, in order to understand unexplained features of SBOs, in addition to the renormalization of the tunneling, a new and important phase correction must be included. For Fermionic systems with strong attractive interactions, one may engineer different types of collisions and recollisions between bound-pairs and unpaired atoms.

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