7 papers
Generalized Aubry-André-Harper model with power-law quasiperiodic potentials
Ya-Nan Wang, Wen-Long You, Zhihao Xu +1
We investigate a generalized Aubry-André-Harper (AAH) model with non-reciprocal hopping and power-law quasiperiodic potentials . Our study r…
Anomalous Localization and Mobility Edges in Non-Hermitian Quasicrystals with Disordered Imaginary Gauge Fields
Guolin Nan, Zhijian Li, Feng Mei +1
Localization in non-Hermitian quasicrystals can differ fundamentally from its Hermitian counterpart when non-reciprocity is spatially disordered. Here we study a one-dimensional no…
Interaction-induced moiré lattices: from mosaic mobility edges to many-body localization
Yan-Hao Yang, Zhihao Xu, Lei Ying +1
We study localization driven solely by interparticle interactions in moiré lattice systems without intrinsic disorder or externally imposed quasiperiodic potentials. We consider a…
Size-Dependent Skin Effect Transitions in Weakly Coupled Non-Reciprocal Chains
Yixuan Li, Linhu Li, Zhihao Xu
Non-Hermitian systems exhibit unique boundary phenomena absent in their Hermitian counterparts, most notably the non-Hermitian skin effect (NHSE). In this work, we explore a lattic…
Topological Phase Transitions and Edge-State Transfer in Time-Multiplexed Quantum Walks
Huimin Wang, Zhihao Xu, Zhijian Li
We investigate the topological phase transitions and edge-state properties of a time-multiplexed nonunitary quantum walk with sublattice symmetry. By constructing a Floquet operato…
Goos-Hnchen shifts of bilayer meta-grating with unidirectional guide resonance
Zhihao Xu, Ma Luo
Bilayer meta-gratings with asymmetric structural parameters could host unidirectional guide resonances. The distribution of unidirectional guide resonances in the space of structur…