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Published on: May 9, 2021
Inducing vortices in a Bose-Einstein condensate using holographically produced light beams
J F S Brachmann1, W S Bakr, J Gillen
1MIT-Harvard Center for Ultracold Atoms, Cambridge, MA 02138, USA. Hannes.Brachmann@mpq.mpg.de
Abstract:
In this paper we demonstrate a technique that can create non-equilibrium vortex configurations with almost arbitrary charge and geometry in a Bose-Einstein condensate. We coherently transfer orbital angular momentum from a holographically generated light beam to a 87Rb condensate using a two-photon stimulated Raman process. Using matter wave interferometry, we verify the phase pattern imprinted onto the atomic wave function for a single vortex and a vortex-antivortex pair. In addition to their phase winding, the vortices created with this technique have an associated hyperfine spin texture.
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