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Shear-Induced Decaying Turbulence in Bose-Einstein Condensates
Simeon Simjanovski, Guillaume Gauthier, Halina Rubinsztein-Dunlop +2
We study the creation and breakdown of a quantized vortex shear layer forming between a stationary Bose-Einstein condensate and a stirred-in persistent current. Once turbulence is…
Emergent Universal Drag Law in a Model of Superflow
Maarten T. M. Christenhusz, Arghavan Safavi-Naini, Halina Rubinsztein-Dunlop +2
Despite the fundamentally different dissipation mechanisms, many laws and phenomena of classical turbulence equivalently manifest in quantum turbulence. The Reynolds law of dynamic…
Optimizing persistent currents in a ring-shaped Bose-Einstein condensate using machine learning
Simeon Simjanovski, Guillaume Gauthier, Matthew J. Davis +2
We demonstrate a method for generating persistent currents in Bose-Einstein condensates by using a Gaussian process learner to experimentally control the stirring of the superfluid…
Viability of rotation sensing using phonon interferometry in Bose-Einstein condensates
Charles W. Woffinden, Andrew J. Groszek, Guillaume Gauthier +7
We demonstrate the use of a ring-shaped Bose-Einstein condensate as a rotation sensor by measuring the interference between two counter-propagating phonon modes imprinted azimuthal…
Dynamic high-resolution optical trapping of ultracold atoms
Guillaume Gauthier, Thomas A. Bell, Alexander B. Stilgoe +3
All light has structure, but only recently it has become possible to construct highly controllable and precise potentials so that most laboratories can harness light for their spec…
Turbulent relaxation to equilibrium in a two-dimensional quantum vortex gas
Matthew T. Reeves, Kwan Goddard-Lee, Guillaume Gauthier +9
We experimentally study emergence of microcanonical equilibrium states in the turbulent relaxation dynamics of a two-dimensional chiral vortex gas. Same-sign vortices are injected…