Strontium Tweezer Arrays via Holographic Metasurfaces

We present a platform for trapping neutral strontium atoms in optical tweezer arrays generated by holographic metasurfaces. Metasurfaces - flat, nanopatterned optical devices - offer an exciting new avenue for the creation of versatile trapping potentials for cold atom experiments. Metasurfaces are usable in- and outside of vacuum, have a small footprint, and excel in high power capability, enabling large tweezer arrays. We characterize the homogeneity, loading characteristics, and cooling of atoms in these traps. The trap wavelength is at 520 nm, an unexplored magic wavelength for the 1S0 - 3P1 intercombination line of strontium. We demonstrate a diverse set of trapping geometries, such as quasicrystals and twisted bilayer graphene, suitable for applications in quantum simulation and quantum optics. Leveraging the versatile trapping geometries, we are working towards the realization of atomic waveguides, demonstrating super- and subradiance in the atomic emission, which may enable future applications as atomic quantum memories.