33 citations · 66 across the 3 of their papers we have counts for
3 papers
cond-mat.quant-gas2010★ 23 cited
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…
quant-ph2010★ 33 cited
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…
cond-mat.mtrl-sci2010★ 10 cited
Variable damping and coherence in a high-density magnon gas
S. Schäfer, V. Kegel, A. A. Serga +2
We report on the fast relaxation behavior of a high-density magnon gas created by a parametric amplification process. The magnon gas is probed using the technique of spin-wave pack…