Rydberg excitons,bound by Coulomb forces,are highly excited electron-hole pairs with physical properties similar to Rydberg atoms,offering broad application prospects.In recent years,the research on Rydberg excitons has gradually expanded into two-dimensional semiconductors.This paper focuses on utilizing the dielectric screening sensitivity of Rydberg exciton states in two-dimensional semiconductors.By designing special van der Waals device structures,researchers can investigate novel states and quantum phase transitions in adjacent two-dimensional electronic systems.Furthermore,the Moiré potential field generated in two-dimensional Moiré superlattices allows spatial confinement and manipulation of these Rydberg excitons,forming strongly coupled Rydberg Moiré exciton states.Experimentally,these states exhibit energy splitting,significant redshift of resonance peak,and narrowed linewidths in the reflectance spectra.These findings lay a crucial foundation for the application of Rydberg excitons in quantum sensing,quantum nonlinear optics,and quantum simulation.
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