101 citations · 206 across the 11 of their papers we have counts for
11 papers
Non-Hermitian Skin Effect from Radiative Coupling in a Reciprocal Chiral Medium
Kin Hung Fung, Changhao Meng, Yixin Xiao +1
We show that long-range radiative coupling in a passive chiral medium produces an unusual non-Hermitian skin effect in a chain of dipoles. The skin-mode profile consists of a long-…
Integer-Graded Reciprocal Skin Effect from Internal Rotation
Kin Hung Fung, C. T. Chan
A prominent class of reciprocal non-Hermitian skin effects has a topological classification, characterized by a parity invariant protected by reciprocity. We show that con…
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…
Nonreciprocal Local-Resonance Induced Complex Band Hybridization
Wang Tat Yau, Kai Fung Lee, Raymond P. H. Wu +4
We study the complex band hybridization induced by nonreciprocal local resonances in photonic crystals. Composed of trimer unit cells, a two-dimensional (2D) magnetophotonic crysta…
Realization of time-reversal invariant photonic topological Anderson insulators
Xiao-Dong Chen, Zi-Xuan Gao, Xiaohan Cui +5
Disorder, which is ubiquitous in nature, has been extensively explored in photonics for understanding the fundamental principles of light diffusion and localization, as well as for…
Effective medium theory for photonic pseudospin-1/2 system
Neng Wang, Ruo-Yang Zhang, C. T. Chan +1
Photonic pseudospin-1/2 systems, which exhibit Dirac cone dispersion at Brillouin zone corners in analogy to graphene, have been extensively studied in recent years. However, it is…
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…
Topological interface modes in local resonant acoustic systems
Degang Zhao, Meng Xiao, C. W. Ling +2
Topological phononic crystals (PCs) are periodic artificial structures which can support nontrivial acoustic topological bands, and their topological properties are linked to the e…
Non-reciprocal mu-near-zero mode in PT-symmetric magnetic domains
Jin Wang, Hui Yuan Dong, Chi Wai Ling +2
We find that a new type of non-reciprocal modes exist at an interface between two \emph{parity-time} () symmetric magnetic domains (MDs) near the frequency of zero ef…
Observation of backscattering-immune chiral electromagnetic modes without time reversal breaking
Wen-Jie Chen, Jian-Wen Dong, Zhi Hong Hang +3
A strategy is proposed to realize robust transport in time reversal invariant photonic system. Using numerical simulation and microwave experiment, we demonstrate that a chiral gui…