A new route to associating ultracold polar molecules in the absolute ground state

<正>Ultracold polar molecules have emerged as a new research frontier in quantum physics and chemistry [1]. These molecules exhibit rich internal rotational, vibrational, and electronic levels, providing new resources for quantum control and quantum metrology. The intrinsic permanent electric dipole moment of polar molecules enables the strong longrange and anisotropic dipole-dipole interaction between spatially displaced molecules and constitutes a valuable tool for simulating novel long-range many-body physics and processing quantum information.