Microscopic theory of exciton and trion polaritons in doped monolayers of transition metal dichalcogenides

We study a doped transition metal dichalcogenide (TMDC) monolayer in an optical microcavity. Using the microscopic theory, we simulate spectra of quasiparticles emerging due to interaction material excitations and high-finesse mode, providing comprehensive analysis as function Fermi energy predicting several modes strong light-matter coupling regime. In addition exciton-polaritons trion-polaritons, report polaritonic that become bright excitons with free carriers. At large doping, reveal strongly coupled corresponding excited trions hybridize cavity mode. also demonstrate rising carrier concentration enables change nature system's ground state from dark one. Our results offer unified description wide range electron densities.