Realizing Optical Tweezer Arrays via Holographic Metasurfaces for Super- and Subradiance Studies with Strontium

We report our progress towards exploring super- and subradiance in optical tweezer arrays. Using holographic metasurfaces, we generate optical tweezer arrays that allow us to realize tightly packed atomic arrays with μm spacing. The metasurface-generated arrays are shown to produce highly uniform trap intensities and feature high power resilience. With such arrays, we have trapped single Sr atoms and achieved single-atom imaging fidelities >99%. In order to pursue super- and subradiance studies, we utilize the Sr ³P₂ -³D₃ transition in the mid-infrared at 2.9 μm. We discuss progress in realizing the necessary laser source and the techniques for state preparation into the ³P₂ state. Our work paves the way for a new platform to study quantum electrodynamics, with potential applications including atomic waveguides, novel atom-photon interfaces, and quantum memories.