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.
, Phillips, W.
and Campbell, G.
Driving Phase Slips in a Superfluid Atom Circuit with a Rotating Weak Link, Physical Review Letters, [online], https://doi.org/10.1103/PhysRevLett.110.025302
(Accessed November 30, 2023)