Exciton-polariton hybrid skin-topological states
Phys. Rev. B 114, 165305 – Published 28 September, 2026
DOI: https://doi.org/10.1103/qrxc-7rdw
Abstract
The non-Hermitian skin effect, where bulk states accumulate at system boundaries, challenges the conventional bulk-boundary correspondence. Here we propose a scheme to realize hybrid skin-topological states in exciton polariton honeycomb lattices by introducing sublattice-dependent gain and loss. This non-Hermiticity couples with the intrinsic topological edge modes, leading to relocalization of edge states. We show two distinct regimes: hybrid skin-Chern states with reversible localization controlled by TE-TM splitting (characterized by a change in spectral winding number from to ), and hybrid skin-antichiral states which preserves the spin-polarized property. Our results bridge polariton spin physics and non-Hermitian topology, opening routes toward controllable nonreciprocal and spin-polarized transport.