Vortex Creation in Bose-Einstein Condensates by Diffraction on a Helical Light Grating

Details Vortex Creation in Bose-Einstein Condensates by Diffraction on a Helical Light Grating Vortex Creation in Bose-Einstein Condensates by Diffraction on a Helical Light Grating

1999-12-14

arxiv.org/abs/cond-mat/9912268v2

Physics

Condensed Matter

Soft Condensed Matter

Submitted to Applied Physics B

Scientific paper

It is shown that diffraction of Bose-Einstein condensates on a helical light grating results in vortices in the condensate. Helical light gratings can be produced by light interference of a Gaussian laser beam with a helical one. Diffraction orders of the Bose-Einstein condensate contain vortices of corresponding topological charge. The phenomena is illustrated by numerical integration of the Gross-Pitaevskii equation in two dimensions.

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