supported by the National Key R&D Program of China(2022YFA1404904);the National Research Foundation Singapore grant under its QEP2.0 programme(NRF2021-QEP2-02-P09);the Ministry of Education(MOE)Tier-II grant(MOE-T2EP502220008);supported by the SUTD-ZJU Thematic Research Grant(SUTD-ZJU(TR)202203)。
Exceptional bound(EB)states represent a unique new class of robust bound states protected by the defectiveness of non-Hermitian exceptional points.Conceptually distinct from the more well-known topological states and ...