We study PT symmetry protected topological phase in non-Hermitian 1D and 2D systems. We show that topological phase exist in non-Hermitian PT symmetric systems for both gapped and gapless systems and discuss appearance of exceptional points. We apply our formalism to a complex extension of the ...
Topological phases are enriched in non-equilibrium open systems effectively described by non-Hermitian Hamiltonians. While several properties unique to non-Hermitian topological systems were uncovered, the fundamental role of symmetry in non-Hermitian physics has yet to be fully understood, and it has ...
Bulk-Boundary Correspondence in Point-Gap Topological PhasesPhysical Review Letters (IF 8.1)Daichi Nakamura, Takumi Bessho, Masatoshi Sato Pub Date: 2024-03-28 Generalized bulk-boundary correspondence in periodically driven non-Hermitian systemsJournal of Physics: Condensed Matter (IF 2.3)Xiang Ji, Xiao...
Recently, similar phenomena have also been observed in many seminal works on the topological properties of non-Hermitian systems. They either revisit the Hatano-Nelson (HN) model to realize versatile directional transports20,21, interpret NHSE from different p erspectives22–27, even to ...
eigenstate localizationnon‐Hermitian topological phase transitionsThe topological properties of a generalized non〩ermitian Su–Schrieffer–Heeger model are investigated and it is demonstrated that the non〩ermitian phase transition and the non〩ermitian skin effect can be induced by intraヽell asymmetric...
We propose a non-Hermitian topological system protected by the generalized rotational symmetry which invokes rotation in space and Hermitian conjugation. The system, described by the tight-binding model with reciprocal imaginary next-nearest-neighbor hopping, is found to host two pairs of in-gap edge...
Non-Hermitian topological photonics in both linear and nonlinear regimes Non-Hermitian quantum systems Exceptional points in optical and photonic systems and applications Wave propagation in disordered non-Hermitian complex media Physical limitations of no...
Liu, Localization-delocalization transitions in non-Hermitian Aharonov-Bohm cages. Front. Phys. 19(3), 33211 (2024) Article ADS MATH Google Scholar E. Zhao, T.H. Mak, C. He, Z. Ren, K.K. Pak, Y.J. Liu, G.B. Jo, Observing a topological phase transition with deep neural ...
Non-Hermitian topological light steering. Science 365, 1163–1166 (2019). Article ADS CAS PubMed Google Scholar Yao, S. & Wang, Z. Edge states and topological invariants of non-Hermitian systems. Phys. Rev. Lett. 121, 086803 (2018). Article ADS CAS PubMed Google Scholar Song, F., ...
Non-Hermitian photonics and topological photonics, as new research fields in optics, have attracted much attention in recent years, accompanying by a great deal of new physical concepts and novel effects emerging. The two fields are gradually crossed during the development process and the non-Hermiti...