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arXiv · 0806.3840

Spin-vortex nucleation in a Bose-Einstein condensate by a spin-dependent rotating trap

Hiroki Chiba·Hiroki Saito
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Abstract

A method to produce a spin-dependent rotating potential using near-resonant circularly polarized laser beams is proposed. It is shown that half-quantum vortices are nucleated in a spinor Bose-Einstein condensate with an antiferromagnetic interaction. In contrast to the vortex nucleation in a scalar BEC, the spin-vortex nucleation occurs at a low rotation frequency ($\simeq 0.1 \omega_\perp$ with $\omega_\perp$ being the radial trap frequency) in a short nucleation time $\simeq 50$ ms without dissipation. A method for nondestructive measurement of half-quantum vortices is discussed.

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Hiroki Chiba, Hiroki Saito. 2008-06-24. Spin-vortex nucleation in a Bose-Einstein condensate by a spin-dependent rotating trap. https://doi.org/10.1103/physreva.78.043602

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