Research work · 2025
Superconducting on-chip microwave cavity for tunable hybrid systems with optically trapped Rydberg atoms
Benedikt Wilde, Manuel Kaiser, Malte Reinschmidt, Andreas Günther, D. Koelle, Jószef Fortágh, R. Kleiner, Daniel Bothner
Physical Review Applied
Abstract
Hybrid quantum systems are promising platforms for addressing important challenges in quantum information science and quantum sensing, but their implementation is technologically demanding. The authors work toward a hybrid system consisting of a superconducting microwave circuit and optically trapped ultracold atoms, focusing on the design optimization of a suitable superconducting chip. Detailed microwave-cavity engineering strategies for maximum coupling rates are presented, as well as an experimental implementation of such a device. These results highlight the relevant considerations and lay the groundwork for this hybrid platform, approaching the strong coupling regime.