Trapped atoms and collective emission on an integrated nanophotonic microring circuit

Integrating cold atoms with nanoscale photonic structures promises stronger atom-light interactions, potentially scalable quantum applications and new opportunities for many-body physics in quantum optics. In this poster, we demonstrate an efficient method to perform laser cooling and trapping of cold atoms on an integrated nanophotonic circuit. With densely packed atoms coupled to a nanophotonic resonator, we study the collective emission of these atoms into a nanophotonic mode and other non-collected modes. The progress towards arranging the atoms into ordered array using two-color evanescent field trap will also be presented. Our demonstration paves the way towards various applications in quantum nonlinear optics, quantum simulations, sensing, and quantum chemistry using cold atom-powered nanophotonic circuits.