Emergence of turbulence in an oscillating Bose-Einstein condensate

Understand

We report on the experimental observation of vortices tangle in an atomic BEC of Rb-87 atoms when an external oscillatory perturbation is introduced in the trap.

• The vortices tangle configuration is a signature of the presence of a turbulent regime in the cloud.
• We also show that this turbulent cloud has suppression of the aspect ratio inversion typically observed in quantum degenerate bosonic gases during free expansion.
• Instead, the cloud expands keeping the ratio between their axis constant.