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Abstract: We study the mechanisms and the limits of pumping vorticity into a spinorcondensate through manipulations of magnetic B- fields. We discover afundamental connection between the geometrical properties of the magneticfields and the quantized circulation of magnetically trapped atoms, a resultwhich generalizes several recent experimental and theoretical studies. Theoptimal procedures are devised that are capable of continuously increasing ordecreasing a condensate-s vorticity by repeating certain two step B-fieldmanipulation protocols. We carry out detailed numerical simulations thatsupport the claim that our protocols are highly efficient, stable, and robustagainst small imperfections of all types. Our protocols can be implementedexperimentally within current technologies.



Autor: Z. F. Xu, P. Zhang, C. Raman, L. You

Fuente: https://arxiv.org/







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