Quantifying Light-assisted Collisions in Optical Tweezers Across the Hyperfine Spectrum

Abstract

We investigate the role of hyperfine structure in resonant-dipole interactions between two atoms cotrapped in an optical tweezer. Two-body loss rates from light-assisted collisions (LACs) are measured across the ${}^{87}$Rb hyperfine spectrum and connected to properties of molecular photoassociation potentials via a semiclassical model. To obtain our results, we introduce an imaging technique that leverages repulsive LACs to detect two atoms in a trap, thereby circumventing parity constraints in tweezers. Our findings offer key insights for exploiting hyperfine structure in laser-induced collisions to control cold atoms and molecules in a broad range of quantum science applications.

4 pages, 4 figures

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Cited by in corpus (3)

• Microsecond-scale high-survival and number-resolved detection of ytterbium atom arrays
• Light-Assisted Collisions in Tweezer-Trapped Lanthanides
• Lellouch-Lüscher relation for ultracold few-atom systems under confinement