In non-Hermitian systems, higher-order exceptional points (EPs) and non-Hermitian Skin Effect (NHSE) offer powerful tools for enhanced sensing and lasing. Here, the authors show that reciprocal Floquet lattices with space-time PT-symmetry can host maximal-order NHSE EPs and extreme skin localization without requiring nonreciprocity.
- Anestis Apostolidis
- Nicholas S. Nye
- Georgios G. Pyrialakos