Ro-vibrational van der Waals interaction between ultracold polar molecules

• URL: http://arxiv.org/abs/2607.25774v2
• Date: Fri, 31 Jul 2026 08:00:09 GMT
• Title: Ro-vibrational van der Waals interaction between ultracold polar molecules
• Abstract summary: We describe the ro-vibrational van der Waals interaction between ultracold polar molecules.<n>This interaction is strong, leading to fast elastic collisions and orders of magnitude suppression of collisional loss.<n>The scheme is compatible with microwave shielding, where it enables controlled state dependent interactions.
• Score: 0.0
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: We describe the ro-vibrational van der Waals interaction between ultracold polar molecules. This interaction is strong, leading to fast elastic collisions and orders of magnitude suppression of collisional loss. This enables evaporative cooling of Fermi mixtures of molecules in different ro-vibrational states, without active shielding by applying external fields. The scheme is compatible with microwave shielding, where it enables controlled state dependent interactions, opening up new opportunities for quantum simulation and impurity physics. The interaction can also be used to stabilize fermionic molecules in optical lattices, to control interactions in synthetic dimensions, for enhanced tweezer loading, and direct infrared shielding.

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