PT-symmetric non-Hermitian systems possess real and complex eigenenergies in the symmetry unbroken and broken phases, respectively. Based on these spectral features and non-Hermitian band theory, the authors provide a framework to generate localized states and dynamics at different sectors of non-Hermitian systems, which can be selectively activated/deactivated by breaking/restoring PT symmetry.
- Zhoutao Lei
- Ching Hua Lee
- Linhu Li
