Effects of atomic interactions on Quantum Accelerator Modes
arXiv:0704.1382 · doi:10.1103/PhysRevA.76.031603
Abstract
We consider the influence of the inclusion of interatomic interactions on the delta-kicked accelerator model. Our analysis concerns in particular quantum accelerator modes, namely quantum ballistic transport near quantal resonances. The atomic interaction is modelled by a Gross-Pitaevskii cubic nonlinearity, and we address both attractive (focusing) and repulsive (defocusing) cases. The most remarkable effect is enhancement or damping of the accelerator modes, depending on the sign of the nonlinear parameter. We provide arguments showing that the effect persists beyond mean-field description, and lies within the experimentally accessible parameter range.
4 pages, 6 figures
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Cited by in corpus (9)
- Second-order, number-conserving description of non-equilibrium dynamics in finite-temperature Bose-Einstein condensates
- Dynamical instability in kicked Bose-Einstein condensates: Bogoliubov resonances
- Macroscopic Quantum Self-Trapping in Dynamical Tunnelling
- Coherence and Instability in a Driven Bose-Einstein Condensate: A Fully Dynamical Number-Conserving Approach
- Nonlinear resonances in δ-kicked Bose-Einstein Condensates
- Bogoliubov excitations in the quasiperiodic kicked rotor: stability of a kicked condensate and the quasi-insulator-metal transition
- Fidelity of the near resonant quantum kicked rotor
- Spinor Dynamics of Quantum Accelerator Modes near Higher Order Resonances
- Effects of interactions on the dynamics of driven cold atoms