Distinctive polariton behavior from anharmonic lattice dynamics

Determine whether the anharmonic, strongly polarizable, and dynamically disordered lattice of lead-halide perovskites produces qualitatively distinct polariton behavior beyond modifications of established cavity physics.

Background

Lead-halide perovskites support exciton–polariton states in microcavities, while their lattice has unusually strong anharmonicity, polarizability, and dynamic disorder. The review leaves unresolved whether these lattice properties generate new polariton phenomena or merely renormalize known light–matter-coupling behavior.