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 …

The non-Hermitian skin effect (NHSE) in non-Hermitian lattice systems, associated with a
point gap on the complex energy plane, has attracted great theoretical and experimental …

The non-Bloch band theory can describe energy bands in a one-dimensional (1D) non-
Hermitian system. On the other hand, whether the non-Bloch band theory can be extended …

In previous studies, the topological invariants of one-dimensional non-Hermitian systems
have been defined in open boundary condition (OBC) to satisfy the bulk-boundary …

Non-Hermitian nodal knot metals (NKMs) contain intricate complex-valued energy bands
which give rise to knotted exceptional loops and new topological surface states. We …

For first-order topological semimetals, non-Hermitian perturbations can drive the Weyl nodes
into Weyl exceptional rings having multiple topological structures and no Hermitian …

Non-Hermitian skin effects and exceptional points are topological phenomena characterized
by integer winding numbers. In this study, we give methods to theoretically detect skin effects …

We study the topological properties of Bose-Mott insulators in one-dimensional non-
Hermitian superlattices, which may serve as effective Hamiltonians for cold atomic optical …