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A quantum hydrodynamic model is used to study the edge modes of chiral Berryplasmons. The transcendental equation of the dispersion relation is solvednonlinearly and semi-analytically. We predict a new one-way chiral edge statewith the quantum effect compared to that without the quantum effect, at theboth side of $q=0$. Indeed, the plasmon frequencies for positive and negative$q$, exhibit different limits for $q\rightarrow 0^{-}$ and $q\rightarrow0^{+}$. As a result, the quantum effect enhances the chirality in the vicinityof $q=0$. Both counterpropagating edge modes exhibit greater confinement to theedge with the quantum effect. In addition, new localized edge modes are foundwith increased Berry flux in both cases, i.e., without and with the quantumeffect.

Quantum hydrodynamic modeling of edge modes in chiral Berry plasmons