Stable giant vortex annuli in microwave-coupled atomic condensates

@article{Qin2016StableGV,
  title={Stable giant vortex annuli in microwave-coupled atomic condensates},
  author={Jieli Qin and Guangjiong Dong and Boris A. Malomed},
  journal={Physical Review A},
  year={2016},
  volume={94},
  pages={053611}
}
Stable self-trapped vortex annuli (VAs) with large values of topological charge S (giant VAs) are not only a subject of fundamental interest, but are also sought for various applications, such as quantum information processing and storage. However, in conventional atomic Bose-Einstein condensates (BECs) VAs with S>1 are unstable. Here, we demonstrate that robust self-trapped fundamental solitons (with S=0) and bright VAs (with the stability checked up to S=5), can be created in the free space… 

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