121 citations · 232 across the 9 of their papers we have counts for
9 papers
Winding-control mechanism of non-Hermitian systems
Yongxu Fu, Yi Zhang
Non-Hermitian quantum systems exhibit various interesting and inter-connected spectral, topological, and boundary-sensitive features. By introducing conditional boundary conditions…
Non-Hermitian Delocalization Induced by Residue Imaginary Velocity
Shi-Xin Hu, Yong-Xu Fu, Yi Zhang
The dichotomy of localization versus delocalization is a historic topic central to quantum and condensed matter physics. We discover a new delocalization mechanism attributed to a…
Braiding Topology of Non-Hermitian Open-Boundary Bands
Yongxu Fu, Yi Zhang
There has been much recent interest and progress on topological structures of the non-Hermitian Bloch bands. Here, we study the topological structures of non-Bloch bands of non-Her…
Hybrid scale-free skin effect in non-Hermitian systems: A transfer matrix approach
Yongxu Fu, Yi Zhang
Surpassing the individual characteristics of the non-Hermitian skin effect (NHSE) and the scale-free (SF) effect observed recently, we systematically exploit the exponential decay…
Nontrivial worldline winding in non-Hermitian quantum systems
Shi-Xin Hu, Yongxu Fu, Yi Zhang
Amid the growing interest in non-Hermitian quantum systems, non-interacting models have received the most attention. Here, through the stochastic series expansion quantum Monte Car…
Complex semiclassical theory for non-Hermitian quantum systems
Guang Yang, Yongkang Li, Yongxu Fu +2
Non-Hermitian quantum systems exhibit fascinating characteristics such as non-Hermitian topological phenomena and skin effect, yet their studies are limited by the intrinsic diffic…
Anatomy of open-boundary bulk in multiband non-Hermitian systems
Yongxu Fu, Yi Zhang
Although the non-Bloch band theory is a milestone in elaborating bulk energy bands of non-Hermitian systems under the open-boundary condition (OBC), vital issues related to multiva…
Degeneracy and defectiveness in non-Hermitian systems with open boundary
Yongxu Fu, Shaolong Wan
We develop a systematically general theory of one-dimensional (1D) non-Hermitian systems, elaborating on the energy bands, the band degeneracy, and the defectiveness of eigenstates…
Non-Hermitian second-order skin and topological modes
Yongxu Fu, Jihan Hu, Shaolong Wan
The skin effect and topological edge states in non-Hermitian system have been well-studied, and the second-order skin effect and corner modes have also been proposed in non-Hermiti…