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.

5 pages plus 5 page supplemental material, 4 figures

References in corpus (14)

• A High Phase-Space-Density Gas of Polar Molecules
• Ultracold dense samples of dipolar RbCs molecules in the rovibrational and hyperfine ground state
• Ultracold Dipolar Gas of Fermionic ${}^{23}$Na${}^{40}$K Molecules in their Absolute Ground State
• Creation of ultracold ${}^{87}$RbCs molecules in the rovibrational ground state
• Spontaneously modulated spin textures in a dipolar spinor Bose-Einstein condensate
• Enhanced sensitivity to variation of the fine structure constant and m_p/m_e in diatomic molecules
• Many-body dynamics of dipolar molecules in an optical lattice
• The hyperfine energy levels of alkali metal dimers: ground-state polar molecules in electric and magnetic fields
• Spontaneous spin textures in dipolar spinor condensates
• Anisotropic Polarizability of Ultracold Polar ${}^{40}$K${}^{87}$Rb Molecules
• Spontaneous Circulation in Ground-State Spinor Dipolar Bose-Einstein Condensates
• Realizing unconventional quantum magnetism with symmetric top molecules
• Production of rovibronic ground state RbCs molecules via two-photon cascade decay
• Spin Waves and Dielectric Softening of Polar Molecule Condensates

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