Topological stirring of two-dimensional atomic Bose-Einstein condensates
arXiv:1303.0640 · doi:10.1088/1742-6596/544/1/012021
Abstract
We stir vortices into a trapped quasi two-dimensional atomic Bose-Einstein condensate by moving three laser stirrers. We apply stirring protocols introduced by Boyland et. al. (2000) that efficiently build in topological chaos in classical fluids and are classified as Pseudo-Anosov stirring protocols. These are compared to their inefficient mixing counterparts, finite-order stirring protocols. We investigate if inefficient stirring protocols result in a more clustered distribution of vortices. The efficiency with which vortices are 'mixed' or distributed in a condensate is important for investigating dynamics of continuously forced quantum turbulence and the existence of the inverse cascade in turbulent two-dimensional superfluids.
12 pages, 6 figures, submitted to Isaac Newton Institute TOD conference proceedings "Knotted, Linked and Tangled Flux in Quantum and Classical Systems"
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Cited by in corpus (5)
- Quantum turbulence in quantum gases
- Controlled polarization of two-dimensional quantum turbulence in atomic Bose-Einstein condensates
- Vinen turbulence via the decay of multicharged vortices in trapped atomic Bose-Einstein condensates
- Signatures of Coherent Vortex Structures in a Disordered 2D Quantum Fluid
- Decay of two-dimensional quantum turbulence in binary Bose-Einstein condensates