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arXiv · 1411.4258

Spinor Bose-Einstein Condensates of Rotating Polar Molecules

Y. Deng·S. Yi
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Abstract

We propose a scheme to realize a pseudospin-$1/2$ model of the $^{1}Σ(v=0)$ bialkali polar molecules with the spin states corresponding to two sublevels of the first excited rotational level. We show that the effective dipole-dipole interaction between two spin-$1/2$ molecules couples the rotational and orbital angular momenta and is highly tunable via a microwave field. We also investigate the ground state properties of a spin-$1/2$ molecular condensate. A variety of nontrivial quantum phases, including the doubly-quantized vortex states, are discovered. Our scheme can also be used to create spin-$1$ model of polar molecules. Thus, we show that the ultracold gases of bialkali polar molecules provide a unique platform for studying the spinor condensates of rotating molecules.

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Y. Deng, S. Yi. 2014-11-16. Spinor Bose-Einstein Condensates of Rotating Polar Molecules. https://doi.org/10.1103/physreva.92.033624

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