High-fidelity detection and continuous operation of strontium arrays in optical lattices

Atom arrays have shaped the research frontier in quantum simulation, quantum metrology and quantum computation in the past years. In most experiments, trap configurations are formed via holographic methods or acousto-optic deflectors, which offer exceptional versatility and dynamic control.

In this talk, I will introduce a complementary approach to realizing microscopically controlled atom arrays through the combination of static large-scale optical lattices with optical tweezer arrays. Utilizing a specialized, highly anisotropic lattice configuration, we directly load thousands of individually addressable strontium atoms from the magneto optical trap. These atoms are subsequently imaged with high-fidelity and minimal loss using repulsive Sisyphus-cooling. Furthermore, by exploiting a bichromatic combination of lattice array and optical tweezer array, we demonstrate the iterative assembly and continuous operation of atom arrays with more than a thousand sorted atoms. Our work paves the way to scale tweezer-based quantum simulators to larger system sizes and opens an alternative preparation route for Hubbard systems in optical lattices without the need for evaporation.