Tilted Material in an Optical Cavity: Light-Matter Moire Effect and Coherent Frequency Conversion.

ABSTRACT: Exciton-polaritons formed inside optical cavities offer a highly tunable platform for exploring novel quantum phenomena. Here, we introduce and theoretically characterize a light-matter moiré effect (LMME) that arises when a 2D material is tilted inside a planar optical cavity, in contrast to stacking multiple layers at a twist angle as is done in forming 2D moiré heterostructures. We show that this geometric tilt produces emergent periodicity in the light-matter coupling, yielding displaced replicas of the polariton dispersion and flat bands near the Brillouin-zone center. Through time-dependent quantum dynamical simulations, we demonstrate that LMME enables coherent frequency conversion and remains robust against phonon-induced decoherence. Our findings establish LMME as a new platform f

SUBMITTER: Manjalingal A 

PROVIDER: S-EPMC12716130 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature