167 citations · 735 across the 21 of their papers we have counts for
21 papers
Scalar-Wave Dispersion in Vectorial Photonic Crystals via Site-Adapted p Orbitals
Yan-Long Chen, Kin Hung Fung, C. T. Chan +1
Electromagnetic waves are intrinsically vectorial and require description via polarization, unlike scalar fields such as acoustic pressure or electronic wavefunctions. In three dim…
Exact flat bands in a 3D photonic crystal
Kin Hung Fung, Yan-Long Chen, C. T. Chan +1
Photonic flat bands are hard to engineer because Maxwell's equations are vectorial: transversality obstructs the localized scalar-like bases that generate destructive-interference…
Unidirectional-like Edge Transport Induced by Non-Hermitian Skin Effects
Junyi Rao, Jinting Ding, Qinghua Guo +2
Non-Hermitian skin effects (NHSEs) enable dramatic boundary accumulation of waves, yet their experimental realization typically demands engineered nonreciprocity or spatially patte…
Searching for topological semi-complete bandgap in elastic truss lattices
Yiran Hao, Dong Liu, Liyou Luo +7
Gapless topological phases have attracted significant interest across both quantum and classical systems owing to their novel physics and promising applications. However, the searc…
Photonic chiral bulk transports manipulated by boundary freedom in three-dimensional meta-crystals
Yingxin Qi, Hanyu Wang, Qinghua Guo +2
In topological physics, one of the most intriguing phenomena is the presence of topological boundary states, accurately predicted by the well-established bulk-edge correspondence.…
Edge and corner states in 2D non-Abelian topological insulators from an eigenvector frame rotation perspective
Tianshu Jiang, Ruo-Yang Zhang, Qinghua Guo +2
We propose the concept of 2D non-Abelian topological insulator which can explain the energy distributions of the edge states and corner states in systems with parity-time symmetry.…
Four-band non-Abelian topological insulator and its experimental realization
Tianshu Jiang, Qinghua Guo, Ruo-Yang Zhang +3
Very recently, increasing attention has been focused on non-Abelian topological charges, e.g. the quaternion group Q8. Different from Abelian topological band insulators, these sys…
Experimental observation of non-Abelian earring nodal links in phononic crystals
Mudi Wang, Shan Liu, Qiyun Ma +7
Nodal lines are symmetry-protected one-dimensional band degeneracies in momentum space, which can appear in numerous topological configurations such as nodal rings, chains, links,…
Topological one-way large-area waveguide states in magnetic photonic crystals
Mudi Wang, Ruo-Yang Zhang, Lei Zhang +4
We have theoretically and experimentally achieved large-area one-way transport by using heterostructures consisting of a domain of an ordinary photonic crystal (PC) sandwiched betw…
Optical pulling using topologically protected one-way-transport surface-arc waves
Neng Wang, Ruo-Yang Zhang, Qinghua Guo +2
This paper proposes a new method to achieve robust optical pulling of particles by using an air waveguide sandwiched between two chiral hyperbolic metamaterials. The pulling force…
Experimental observation of non-Abelian topological charges and bulk-edge correspondence
Qinghua Guo, Tianshu Jiang, Ruo-Yang Zhang +5
In the past decades, topological concepts have emerged to classify matter states beyond the Ginzburg-Landau symmetry breaking paradigm. The underlying global invariants are usually…
Vortical Reflection and Spiraling Fermi Arcs with Weyl Metamaterials
Hua Cheng, Wenlong Gao, Yangang Bi +10
Scatterings and transport in Weyl semimetals have caught growing attention in condensed matter physics, with observables including chiral zero modes and the associated magnetoresis…
Observation of non-Abelian nodal links in photonics
Erchan Yang, Biao Yang, Oubo You +8
In crystals, two bands may cross each other and form degeneracies along a closed loop in the three-dimensional momentum space, which is called nodal line. Nodal line degeneracy can…
Highly degenerate photonic flat bands arising from complete graph configurations
Hanyu Wang, Biao Yang, Wei Xu +4
Inspired by complete graph theory, we demonstrate that a metallic claw "meta-atom" structure can carry a high number of nearly degenerate resonant modes. A photonic meta-crystal co…
Observation of Three-dimensional Photonic Dirac points and Spin-polarized Surface Arcs
Qinghua Guo, Oubo You, Biao Yang +9
Topological phases arise from the elegant mathematical structures imposed by the interplay between symmetry and topology1-5. From gapped topological insulators to gapless semimetal…
Discovery of ideal Weyl points with helicoid surface states
Biao Yang, Qinghua Guo, Ben Tremain +11
Weyl points, serving as monopoles in the momentum space and laying the foundation of topological gapless phases, have recently been experimentally demonstrated in various physical…
Observation of photonic Fermi arcs in topological metamaterials
Biao Yang, Qinghua Guo, Ben Tremain +8
The discovery of topological phases introduces new perspectives and platforms for various interesting physics originally investigated in quantum context and then, on an equal footi…
Three dimensional photonic Dirac points in metamaterials
Qinghua Guo, Biao Yang, Lingbo Xia +5
Topological semimetals, representing a new topological phase that lacks a full bandgap in bulk states and exhibiting nontrivial topological orders, recently have been extended to p…
Controlling plasmonic orbital angular momentum by combining geometric and dynamic phases
Qilong Tan, Qinghua Guo, Hongchao Liu +2
Tunable orbit angular momentum (OAM) of surface plasmon polaritons (SPPs) is theoretically studied with appropriately designed metasurfaces. By controlling both the orientation ang…
Phenomenological modeling of Geometric Metasurfaces
Weimin Ye, Qinghua Guo, Yuanjiang Xiang +2
Metasurfaces, with their superior capability in manipulating the optical wavefront at the subwavelength scale and low manufacturing complexity, have shown great potential for plana…
One-way helical electromagnetic wave propagation supported by magnetized plasma
Biao Yang, Mark Lawrence, Wenlong Gao +2
In this paper we reveal the presence of photonic one-way helical surface states in a simple natural system - magnetized plasma. The application of an external magnetic field to a b…