Parity–time-symmetric photonic topological insulator

Nature Materials, Published online: 09 January 2024; doi:10.1038/s41563-023-01773-0

The authors propose a non-Hermitian topological insulator with a real-valued energy spectrum based on a periodically driven Floquet model implemented in a photonic platform where generalized parity–time symmetry is protected against spontaneous symmetry breaking under a spatiotemporal gain and loss distribution.Nature Materials, Published online: 09 January 2024; doi:10.1038/s41563-023-01773-0The authors propose a non-Hermitian topological insulator with a real-valued energy spectrum based on a periodically driven Floquet model implemented in a photonic platform where generalized parity–time symmetry is protected against spontaneous symmetry breaking under a spatiotemporal gain and loss distribution. Read More