2013/09/30 by L. A. Toikka, L A Toikka
Physics and Astronomy · #Cold Atom Physics and Bose-Einstein Condensates #Function (biology) #Nonlinear Photonic Systems #Representation (politics) #Ring (chemistry) #Strong Light-Matter Interactions #Toroid #Trap (plumbing) #cond-mat.quant-gas
paper · pdf · doi:10.1088/1367-2630/16/4/043011
published as New J. Phys. 16, 043011 (2014) · 12 pages, 4 figures
arxiv created 2013/12/12 · openalex publication_date 2014/04/11 · arxiv updated 2014/04/15 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We demonstrate the role played by a ring trap and the associated ring geometry in inducing self-interference of a toroidal Bose-Einstein condensate. We start by showing how the existence of the self-interference can be inferred from the Wigner function representation of the ring. Then, using analytical expressions for the time-evolution of a freely expanding ring condensate with and without a persistent current, we show that the self-interference of the ring condensate is possible only in the absence of the persistent current. We conclude by proposing an experimental protocol for the creation of ring dark solitons using the toroidal self-interference.