Creating vortex rings and three-dimensional skyrmions in Bose-Eeinstein condensates |
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Authors: | Ruostekoski J Anglin J R |
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Institution: | Department of Physical Sciences, University of Hertfordshire, Hatfield, Herts AL10 9AB, United Kingdom. |
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Abstract: | We propose a method of generating a vortex ring in a Bose-Einstein condensate by means of electromagnetically induced atomic transitions. Some remnant population of atoms in a second internal state remains within the toroidal trap formed by the mean-field repulsion of the vortex ring. This population can be removed, or it can be made to flow around the torus (i.e., within the vortex ring). If this flow has a unit topological winding number, the entire structure formed by the two condensates is an example of a three-dimensional Skyrmion texture. |
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