Twisted unwinding of multi-charged quantum vortex and generation of turbulence in atomic Bose-Einstein condensates

Abstract

We report the observation of the twisted decay of quadruply charged vortices in an atomic Bose-Einstein condensate. Supporting numerical simulations show that the singly-charged vortices, which result from the decay of a multi-charged vortex, twist around intertwined in the shape of helical Kelvin waves. Finally, we propose to apply this effect to generate an almost isotropic state of turbulence which we characterize in terms of the velocity statistics.

11 pages, 4 figures, supp. material attached

References in corpus (7)

• XMDS2: Fast, scalable simulation of coupled stochastic partial differential equations
• Velocity Statistics Distinguish Quantum Turbulence from Classical Turbulence
• Quantum turbulence in trapped atomic Bose-Einstein condensates
• Splitting Instability of a Multiply Charged Vortex in a Bose-Einstein Condensate
• Splitting times of doubly quantized vortices in dilute Bose-Einstein condensates
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Cited by in corpus (4)

• Geometric frustration in polygons of polariton condensates creating vortices of varying topological charge
• Heating up quadruply quantized vortices: Splitting patterns and dynamical transitions
• Splitting of doubly quantized vortices in holographic superfluid of finite temperature
• Direct excitation of Kelvin waves on quantized vortices