Inducing vortices in a Bose-Einstein condensate using holographically produced light beams

Details Inducing vortices in a Bose-Einstein condensate using holographically produced light beams Inducing vortices in a Bose-Einstein condensate using holographically produced light beams

2011-02-16

arxiv.org/abs/1102.3373v1

Physics

Condensed Matter

Quantum Gases

4 pages, 5 figures

Scientific paper

In this paper we demonstrate a technique that can create out-of-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 Rubidium 87 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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