A two-component Bose-Einstein condensate driven by a Laguerre-Gaussian beam in a Lambda configuration can host a tightly localized vortex ground state that can be moved and used to measure the superfluid critical velocity.
Moving the vortex at twice the speed,v2 = 2v1, results in setting the whole of the second component in circular motion
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Light-induced localized vortices in multicomponent Bose-Einstein condensates
A two-component Bose-Einstein condensate driven by a Laguerre-Gaussian beam in a Lambda configuration can host a tightly localized vortex ground state that can be moved and used to measure the superfluid critical velocity.