Tuning the Coherent Propagation of Organic Exciton-Polaritons through the Cavity Q-factor.

ABSTRACT: Transport of excitons in organic materials can be enhanced through polariton formation when the interaction strength between these excitons and the confined light modes of an optical resonator exceeds their decay rates. While the polariton lifetime is determined by the Q(uality)-factor of the optical resonator, the polariton group velocity is not. Instead, the latter is solely determined by the polariton dispersion. Yet, experiments suggest that the Q-factor also controls the polariton propagation velocity. To understand this observation, the authors perform molecular dynamics simulations of Rhodamine chromophores strongly coupled to Fabry-Pérot cavities with various Q-factors. The results suggest that propagation in the aforementioned experiments is initially dominated by ballistic motion

SUBMITTER: Tichauer RH 

PROVIDER: S-EPMC10667804 | biostudies-literature | 2023 Nov

REPOSITORIES: biostudies-literature