Collective effects in 171Yb doped in YVO4 coupled to a nanophotonic cavity (II)*

Superradiance and subradiance are collective phenomena where the emitter's radiation rate is enhanced and suppressed, respectively. There is interest in exploring these effects as they provide valuable insights into many-body physics of interreacting emitters. Resonators coupled to atomic ensembles are also promising candidates for quantum devices such as memories and transducers, which motivates additional interest in understanding properties of these systems. In this talk, we discuss the subradiance dynamics of ytterbium-171 ions doped in yttrium orthovanadate (YVO4) coupled to a nanophotonic cavity. We find an increase in the population of the long-lived subradiant states through optically pumping superradiant states. This study furthers the understanding of collective dynamics in inhomogeneously broadened ensembles.