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Vortex coupler for atomic Bose-Einstein condensates

Karl-Peter Marzlin·Weiping Zhang·Ewan M. Wright
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Abstract

A coherent coupler is proposed to spin a Bose-Einstein condensate composed of ultracold alkali atoms into a vortex state (VS). The proposal is based on a Raman transition induced by two copropagating $σ^+$ and $σ^-$ polarized Laguerre-Gaussian laser beams with different frequencies. We show that the transfer of angular momentum of photons to the condensed atoms through a Raman transition leads to a coherent coupling of the ground-state condensate to a rotating condensate in a VS. The detection of such a VS is discussed.

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BibTeXRIS

Karl-Peter Marzlin, Weiping Zhang, Ewan M. Wright. 1997-08-26. Vortex coupler for atomic Bose-Einstein condensates. https://doi.org/10.1103/physrevlett.79.4728

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