Trapping and controlling atoms on microring circuits for nanophotonic cavity QED

The integration of cold neutral atoms with nanophotonic circuits offers significant potential as a light-matter interface for a wide range of applications, from studies of atom-photon interactions and quantum many-body physics to quantum networks. These opportunities are enabled through direct engineering of photon transport on waveguides, and enhancing photonic density of states in nanophotonic resonators for realizing strong and cooperative atom-light coupling. Our approach is based on high-quality silicon nitride microring resonators fabricated on a transparent membrane substrate and coupled to a fiber network. The circuit is fully compatible with laser cooling and trapping atoms. We have realized direct loading of cold atoms into an optical tweezer lattice formed on a microring circuit. An optical conveyor-belt technique is implemented to deliver trapped atoms to the near field of a resonator mode. We will present our experimental progress towards realizing coupling trapped atoms with a microring circuit.