High-precision multiband spectroscopy of ultracold fermions in a nonseparable optical lattice
High-precision multiband spectroscopy of ultracold fermions in a nonseparable optical lattice
Cold atoms in optical lattices offer a controlled way to study quantum many-body systems, but harnessing their potential depends on knowing the band structure of the lattice. A momentum-resolved multiband spectroscopy method is experimentally demonstrated, providing high-precision results for a graphenelike lattice.