231 citations · 900 across the 21 of their papers we have counts for
12 papers · 1 filter
Topological phononic metamaterials
Weiwei Zhu, Weiyin Deng, Yang Liu +6
The concept of topological energy bands and their manifestations have been demonstrated in condensed matter systems as a fantastic paradigm toward unprecedented physical phenomena…
Anomalous Floquet non-Hermitian skin effect in a ring resonator lattice
He Gao, Haoran Xue, Zhongming Gu +6
We present a one-dimensional coupled ring resonator lattice exhibiting a variant of the non- Hermitian skin effect (NHSE) that we call the anomalous Floquet NHSE. Unlike existing a…
Hybrid skin-topological modes without asymmetric couplings
Weiwei Zhu, Jiangbin Gong
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 interes…
Floquet higher-order Weyl and nexus semimetals
Weiwei Zhu, Muhammad Umer, Jiangbin Gong
This work reports the general design and characterization of two exotic, anomalous nonequilibrium topological phases. In equilibrium systems, the Weyl nodes or the crossing points…
Symmetry Analysis of Anomalous Floquet Topological Phases
Weiwei Zhu, Yidong Chong, Jiangbin Gong
The topological characterization of nonequilibrium topological matter is highly nontrivial because familiar approaches designed for equilibrium topological phases may not apply. In…
Delocalization of topological edge states
Weiwei Zhu, Wei Xin Teo, Linhu Li +1
The non-Hermitian skin effect (NHSE) in non-Hermitian lattice systems depicts the exponential localization of eigenstates at system's boundaries. It has led to a number of counter-…
Time-periodic corner states from Floquet higher-order topology
Weiwei Zhu, Haoran Xue, Jiangbin Gong +2
The recent discoveries of higher-order topological insulators (HOTIs) have shifted the paradigm of topological materials, which was previously limited to topological states at boun…
Floquet higher order topological insulator in a periodically driven bipartite lattice
Weiwei Zhu, Y. D. Chong, Jiangbin Gong
Floquet higher order topological insulators (FHOTIs) are a novel topological phase that can occur in periodically driven lattices. An appropriate experimental platform to realize F…
Direct dynamical characterization of higher-order topological insulators with nested band inversion surfaces
Linhu Li, Weiwei Zhu, Jiangbin Gong
Higher-order topological insulators (HOTIs) are systems with topologically protected in-gap boundary states localized at their -dimensional boundaries, with the system d…
Simultaneous Observation of Topological Edge State and Exceptional Point in an Open and Non-Hermitian System
Weiwei Zhu, Xinsheng Fang, Dongting Li +4
This paper reports on the experimental observation of topologically protected edge state and exceptional point in an open and Non-Hermitian system. While the theoretical underpinni…
Zak phase and band inversion in dimerized one-dimensional locally resonant metamaterials
Weiwei Zhu, Ya-qiong Ding, Jie Ren +4
Zak phase, which refers to the Berry's phase picked up by a particle moving across the Brillouin zone, characterizes the topological properties of Bloch bands in one-dimensional pe…
Simulating Quantum Spin Hall Effect in Topological Lieb Lattice of Linear Circuit
Weiwei Zhu, Shanshan Hou, Yang Long +2
Inspired by the topological insulator circuit proposed and experimentally verified by Jia., et al. \cite{1}, we theoretically realized the topological Lieb lattice, a line centered…