Spin-Valley Locked Edge States Through Staggered Chiral Photonic Crystals with Honeycomb Unit Cell

Topological photonics mimic topological condensed matter physics which has opened up possibilities to transport the photons efficiently and robustly. In this poster presentation, we present spin-valley locking of edge states through staggered chiral photonic crystals which have the two-dimensional honeycomb unit cell. We demonstrate the bulk band dispersion with a bandgap in the spin-valley locked edge states and by calculating with a coupled dipole method. And the spin-valley locking characteristics can be obtained when the staggered chirality breaks the inversion symmetry.