Edge states hybridize in finite-size topological materials,opening a gap between edge states which weakens the topological protection.Recent studies discover the recovery of zero modes in the finite-size non-Hermitian...Edge states hybridize in finite-size topological materials,opening a gap between edge states which weakens the topological protection.Recent studies discover the recovery of zero modes in the finite-size non-Hermitian Su-Schrieffer-Heeger photonic lattices,which is of significance for fault-tolerant photonic integrations.In this paper,we reveal that the underlying mechanism is level attraction,a phenomenon common in non-Hermitian systems.展开更多
基金partial support from Hong Kong RGCpartly supported by the National Natural Science Foundation of China(Grant Nos.12504562 and 12474218)the HNNSF(Grant No.2024JJ2061)。
文摘Edge states hybridize in finite-size topological materials,opening a gap between edge states which weakens the topological protection.Recent studies discover the recovery of zero modes in the finite-size non-Hermitian Su-Schrieffer-Heeger photonic lattices,which is of significance for fault-tolerant photonic integrations.In this paper,we reveal that the underlying mechanism is level attraction,a phenomenon common in non-Hermitian systems.
