162 citations · 432 across the 8 of their papers we have counts for
8 papers
Robust Edge States in Amorphous Gyromagnetic Photonic Lattices
Shampy Mansha, Y. D. Chong
We numerically study amorphous analogues of a two-dimensional photonic Chern insulator. The amorphous lattices consist of gyromagnetic rods that break time-reversal symmetry, with…
Anomalous Nonlocal Resistance and Spin-charge Conversion Mechanisms in Two-Dimensional Metals
Chunli Huang, Y. D Chong, Miguel A. Cazalilla
We uncover two anomalous features in the nonlocal transport behavior of two-dimensional metallic materials with spin-orbit coupling. Firstly, the nonlocal resistance can have negat…
Pseudo-Hermitian Hamiltonians Generating Waveguide Mode Evolution
Penghua Chen, Y. D. Chong
We study the properties of Hamiltonians defined as the generators of transfer matrices in quasi- one-dimensional waveguides. For single- or multi-mode waveguides obeying flux conse…
Direct coupling between charge current and spin polarization by extrinsic mechanisms in graphene
Chunli Huang, Y. D. Chong, Miguel. A. Cazalilla
Spintronics---the all-electrical control of the electron spin for quantum or classical information storage and processing---is one of the most promising applications of the two-dim…
PT Symmetry Breaking and Nonlinear Optical Isolation in Coupled Microcavities
Xin Zhou, Yidong Chong
We perform a theoretical study of nonlinear optical isolator devices based on coupled microcavities with gain and loss. Using coupled-mode theory, we derive a correspondence betwee…
Directional excitation of graphene surface plasmons
Fangli Liu, Cheng Qian, Y. D. Chong
We propose a scheme to directionally couple light into graphene plasmons by placing a graphene sheet on a magneto-optical substrate. When a magnetic field is applied parallel to th…
Localization and adiabatic pumping in a generalized Aubry-André-Harper model
Fangli Liu, Somnath Ghosh, Y. D. Chong
A generalization of the Aubry-André-Harper (AAH) model is developed, containing a tunable phase shift between on-site and off-diagonal modulations. A localization transition can be…
Coherent perfect absorption and reflection in slow-light waveguides
Nadav Gutman, C. Martijn de Sterke, Andrey A. Sukhorukov +1
We identify a family of unusual slow-light modes occurring in lossy multi-mode grating waveguides, for which either the forward or backward mode components, or both, become degener…