Spinor Bose-Einstein Condensates of Rotating Polar Molecules

Abstract

We propose a scheme to realize a pseudospin-$1/2$ model of the ${}^1\Sigma (v=0)$ 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.

arXiv comment5 pages plus 5 page supplemental material, 4 figures

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Cited by in corpus (3)

• Extending rotational coherence of interacting polar molecules in a spin-decoupled magic trap
• Coupled spin-vortex pair in dipolar spinor Bose-Einstein condensates
• Spin-orbit-coupled Bose-Einstein condensates of rotating polar molecules