Room-Temperature Exciton Polaritons in Monolayer WS Enabled by Plasmonic Bound States in the Continuum.

Exciton polaritons formed by the strong coupling between excitons and photons have been extensively studied in transition metal disulfides (TMDs) for their potential to inherit ultralong radiation lifetime and remarkable nonlinearity. Many studies have achieved strong coupling at room temperature. However, the systems in these studies generally lack orderly characteristics and precise controllability, and their tunability also remains rather limited.