Nonlinear Interaction of Rydberg Exciton-Polaritons in Two-Dimensional WSe2

We demonstrate the formation of Rydberg exciton-polaritons in monolayer WSe2 embedded in a microcavity and their 10X enhanced nonlinear interaction strength compared to the 1S exciton-polaritons owing to their larger size. © 2019 The Author(s)