119 citations · 506 across the 8 of their papers we have counts for
7 papers
Quantum dynamics of Bose-Einstein condensates in tilted and driven bichromatic optical lattices
D. Witthaut, F. Trimborn, V. Kegel +1
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…
Nonlinear Landau-Zener tunneling in quantum phase space
F. Trimborn, D. Witthaut, V. Kegel +1
We present a detailed analysis of the Landau-Zener problem for an interacting Bose-Einstein condensate in a time-varying double-well trap, especially focussing on the relation betw…
Dissipation induced coherence and stochastic resonance of an open two-mode Bose-Einstein condensate
D. Witthaut, F. Trimborn, S. Wimberger
We discuss the dynamics of a Bose-Einstein condensate in a double-well trap subject to phase noise and particle loss. The phase coherence of a weakly-interacting condensate, experi…
Dissipation induced coherence of a two-mode Bose-Einstein condensate
D. Witthaut, F. Trimborn, S. Wimberger
We discuss the dynamics of a Bose-Einstein condensate in a double-well trap subject to phase noise and particle loss. The phase coherence of a weakly-interacting condensate as well…
Exact number conserving phase-space dynamics of the M-site Bose-Hubbard model
F. Trimborn, D. Witthaut, H. J. Korsch
The dynamics of M-site, N-particle Bose-Hubbard systems is described in quantum phase space constructed in terms of generalized SU(M) coherent states. These states have a special s…
Beyond mean-field dynamics of small Bose-Hubbard systems based on the number-conserving phase space approach
F. Trimborn, D. Witthaut, H. J. Korsch
The number-conserving quantum phase space description of the Bose-Hubbard model is discussed for the illustrative case of two and three modes, as well as the generalization of the…