Making vortices in dipolar spinor condensates via rapid adiabatic passage

TL;DR

This paper demonstrates a method to create vortices in dipolar spinor condensates through controlled magnetic field inversion, revealing the role of dipole interactions and spin textures, and modeling the process with rapid adiabatic passage.

Contribution

It introduces a novel technique to generate vortices in spinor condensates using magnetic dipole interactions and a rapid adiabatic passage model.

Findings

Successful creation of doubly quantized vortices in spinor condensates.

Controlled population transfer among spin states via magnetic field inversion.

The process is well-described by a simple rapid adiabatic passage model.

Abstract

We propose to the create vortices in spin-1 condensates via magnetic dipole-dipole interaction. Starting with a polarized condensate prepared under large axial magnetic field, we show that by gradually inverting the field, population transfer among different spin states can be realized in a controlled manner. Under optimal condition, we generate a doubly quantized vortex state containing nearly all atoms in the condensate. The resulting vortex state is a direct manifestation of the dipole-dipole interaction and spin textures in spinor condensates. We also point out that the whole process can be qualitatively described by a simple rapid adiabatic passage model.