Abstract

Symmetry governs nonlinear interactions in condensed matter systems, particularly in high-harmonic generation (HHG), where the interplay between the driving field and crystal symmetries dictates the properties of the emitted harmonics. This work studies the nonlinear response of graphene and MoS₂ to circularly polarized quantum light and shows that quantum fluctuations break the dynamical symmetry of the driving field while preserving the crystal symmetry, enabling classically forbidden harmonics. The results establish quantum states of light as a new degree of control over harmonic generation in solids.

Abstract

Symmetry governs nonlinear interactions in condensed matter systems, particularly in high-harmonic generation (HHG), where the interplay between the driving field and crystal symmetries dictates the properties of the emitted harmonics. This work studies the nonlinear response of graphene and MoS₂ to circularly polarized quantum light and shows that quantum fluctuations break the dynamical symmetry of the driving field while preserving the crystal symmetry, enabling classically forbidden harmonics. The results establish quantum states of light as a new degree of control over harmonic generation in solids.

Abstract

Symmetry governs nonlinear interactions in condensed matter systems, particularly in high-harmonic generation (HHG), where the interplay between the driving field and crystal symmetries dictates the properties of the emitted harmonics. This work studies the nonlinear response of graphene and MoS₂ to circularly polarized quantum light and shows that quantum fluctuations break the dynamical symmetry of the driving field while preserving the crystal symmetry, enabling classically forbidden harmonics. The results establish quantum states of light as a new degree of control over harmonic generation in solids.

Abstract

Symmetry governs nonlinear interactions in condensed matter systems, particularly in high-harmonic generation (HHG), where the interplay between the driving field and crystal symmetries dictates the properties of the emitted harmonics. This work studies the nonlinear response of graphene and MoS₂ to circularly polarized quantum light and shows that quantum fluctuations break the dynamical symmetry of the driving field while preserving the crystal symmetry, enabling classically forbidden harmonics. The results establish quantum states of light as a new degree of control over harmonic generation in solids.