2019/10/06 by James Schloss, Peter Barnett, Rashi Sachdeva +1 · 1 citation
Physics and Astronomy · #quant-ph #cond-mat.quant-gas #physics.flu-dyn
paper · pdf · doi:10.1103/physreva.102.043325
published as Phys. Rev. A 102, 043325 (2020) · 8 pages, 6 figures
arxiv created 2019/10/06 · arxiv updated 2020/10/28
The physics of quantized vortex excitations in atomic Bose-Einstein condensates has been extensively studied in recent years.Although simple vortex lines are relatively easy to create, control, and measure in experiments, it is a lot more difficult to do the same for vortex ring structures.Here we suggest and explore a method for generating and controlling superfluid vortex rings, vortex ring lattices, and other three dimensional vortex structures in toroidally-trapped superfluid Bose--Einstein condensates by using the artificial magnetic field produced by an optical nanofiber.The presence of the fiber also necessitates a multiply-connected geometry and we show that in this situation the presence of these vortex structures can be deduced from exciting the scissors mode of the condensate.