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Driving Phase Slips in a Superfluid Atom Circuit with a Rotating Weak Link



Kevin C. Wright, William D. Phillips, Gretchen K. Campbell


We have induced well-defined phase slips between quantized persistent current states around a toroidal atomic 23Na Bose-Einstein condensate by rotating a weak link (a localized region of reduced superfluid density) around the ring at low angular frequency. This is analogous to the behavior of a superconducting loop with a weak link in the presence of an external magnetic field. At higher angular frequencies, well-defined phase slips no longer occur, and vortices enter the condensate.
Physical Review Letters


Bose-Einstein condensation, cold atoms, quantum physics


Wright, K. , Phillips, W. and Campbell, G. (2013), Driving Phase Slips in a Superfluid Atom Circuit with a Rotating Weak Link, Physical Review Letters, [online], (Accessed July 15, 2024)


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Created January 10, 2013, Updated November 10, 2018