Exciton-Polariton hybrid skin-topological states

TL;DR

This paper proposes a method to realize hybrid skin-topological states in exciton polariton honeycomb lattices using sublattice-dependent gain and loss, enabling control over edge state localization and spin polarization.

Contribution

It introduces a novel scheme combining non-Hermitian effects with topological properties in polariton lattices, revealing new regimes of hybrid skin topological states.

Findings

Hybrid skin Chern states with switchable localization

Hybrid skin antichiral states preserving spin polarization

Bridging polariton spin physics with non-Hermitian topology

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 switchable localization controlled by TE TM splitting , 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 non reciprocal and spin polarized transport.