In this work our researchers studied a doped transition metal dichalcogenide monolayer. Using microscopic theory, they described the spectrum of quasiparticles resulting from the interaction of material excitations with the high-Q mode of an optical resonator, which allowed them to comprehensively analyze the optical spectrum as a function of the Fermi energy, as well as predict several modes in the light-to-matter strong coupling mode. In addition to exciton-polaritons and trion-polaritons, the article also talks about polariton modes that become bright due to interaction with free carriers. With heavy doping, strongly coupled modes are found, corresponding to excited trions, which are hybridized by the resonator mode.
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