Observation of Microwave Shielding of Ultracold Molecules

Abstract

Harnessing the potential wide-ranging quantum science applications of molecules will require control of their interactions. Here, we use microwave radiation to directly engineer and tune the interaction potentials between ultracold calcium monofluoride (CaF) molecules. By merging two optical tweezers, each containing a single molecule, we probe collisions in three dimensions. The correct combination of microwave frequency and power creates an effective repulsive shield, which suppresses the inelastic loss rate by a factor of six, in agreement with theoretical calculations. The demonstrated microwave shielding shows a general route to the creation of long-lived, dense samples of ultracold molecules and evaporative cooling.

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Cited by in corpus (8)

• Observation of Bose-Einstein Condensation of Dipolar Molecules
• Bimolecular chemistry in the ultracold regime
• Laser cooled molecules
• Tunable itinerant spin dynamics with polar molecules
• A Feshbach resonance in collisions between ultracold ground state molecules
• Ultracold field-linked tetratomic molecules
• Molecule-molecule and atom-molecule collisions with ultracold RbCs molecules
• Ab initio study of the reactivity of ultracold RbSr$+$RbSr collisions