Progress towards extensions of Fermi-Hubbard models in a quantum gas microscope

Ultracold fermionic atoms in tunable optical lattices realize a broad class of Hubbard models in various lattice configurations. Dynamical tunability of lattice connectivity has allowed us to prepare very low entropy initial states, and adiabatically transform them to interesting regimes of the Hubbard model, where theoretical tools and numerical methods break down. Here we report on studies of quantum magnetism in bipartite and frustrated lattice configurations as well as in multi-band Hubbard models with a flat energy band. We further explore general cooling schemes and new experimental protocols to probe the emergent low temperature physics in the model.