Dipole Interaction Mediated Laser Cooling of Polar Molecules to Ultra-cold Temperatures

TL;DR

This paper introduces a novel laser cooling method for polar molecules using dipole interactions with Rydberg atoms, enabling cooling to ultra-cold temperatures and quantum degeneracy.

Contribution

The work proposes a new approach to control decay rates in polar molecules via dipolar exchange with Rydberg atoms, facilitating laser cooling.

Findings

Controlled decay rates enable optical pumping of hyperfine levels.

Method allows cooling polar molecules to ultra-cold temperatures.

Potential to achieve quantum degeneracy in polar molecules.

Abstract

We present a method to design a finite decay rate for excited rotational states in polar molecules. The setup is based on a hybrid system of polar molecules with atoms driven into a Rydberg state. The atoms and molecules are coupled via the strong dipolar exchange interaction between two rotation levels of the polar molecule and two Rydberg states. Such a controllable decay rate opens the way to optically pump the hyperfine levels of polar molecules and it enables the application of conventional laser cooling techniques for cooling polar molecules into quantum degeneracy.