Quantum dynamics of Bose-Einstein condensates in tilted and driven bichromatic optical lattices
arXiv:1012.2896 · doi:10.1103/PhysRevA.83.013609
Abstract
We study the dynamics of Bose-Einstein condensates in tilted and driven optical superlattices. For a bichromatic lattice, each Bloch band split up into two minibands such that the dynamics is governed by the interplay of Bloch oscillations and transitions between the bands. Thus, bichromatic potentials provide an excellent model system for the study of nonlinear Landau-Zener tunneling and allow for a variety of applications in matter wave interferometry and quantum metrology. In the present paper we investigate the coherent dynamics of an interacting Bose-Einstein condensate as well as its stability. Different mechanisms of instability are discussed, which lead to a rapid depletion of the condensate.
9 pages, 9 figures, to appear in Phys. Rev. A
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- Adiabatic passage through chaos
- Many-body quantum dynamics of initially trapped systems due to a Stark potential --- thermalization vs. Bloch oscillations
- Loop Structure Stability of a Double-Well-Lattice BEC
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- Bloch oscillations in a Bose-Hubbard chain with single-particle losses
- Amplitude modulated Bloch oscillations of photon probability distribution in a cavity-atom system