Strongly nonlinear nanocavity exciton-polaritons in monolayer semiconductors

Key Points

• Exciton-polaritons exhibit extreme nonlinearity when coupled with a photonic crystal nanocavity, showcasing unique properties.
• The study highlights that picosecond all-optical switching is feasible at very low excitation energies in these systems.
• MoSe2 monolayer provides a robust platform for realizing strongly nonlinear optical phenomena in nanostructures.
• This work points to potential applications in ultrafast optical devices, driven by the capabilities of nanocavity integration.