Using the strong dispersive coupling to a high-cooperativity cavity, we demonstrate fast and non-destructive number-resolved detection of atoms in optical tweezers. We observe individual atom-atom collisions, quantum state jumps, and atom loss events with a time resolution of 100μs through continuous measurement of cavity transmission. Using adaptive feedback control in combination with the non-destructive measurements, we further prepare a single atom with 92(2)% probability.
@article{arxiv.2411.12622,
title = {Cavity-enabled real-time observation of individual atomic collisions},
author = {Matthew L. Peters and Guoqing Wang and David C. Spierings and Niv Drucker and Beili Hu and Yu-Ting Chen and Vladan Vuletić},
journal= {arXiv preprint arXiv:2411.12622},
year = {2025}
}