In photonic crystal systems, topologically protected edge states and corner states can be
achieved by breaking spatial inversion symmetry, which is expected to be applied to …

Active topological phase transitions widely occur in active matters and biological systems,
such as developing embryos. Since the discovery of the intriguing bulk-boundary effects of …

Higher-order topological insulators (HOTIs) have emerged as unique topological materials
hosting topological corner or hinge states. This work investigates terahertz (THz) higher …

Higher-order topological insulators have drawn great research attention in nanophotonics
due to their ability to both support robust edge states and lower dimensional corner states. In …

Progress on two-dimensional materials has shown that valleys, as energy extrema in a
hexagonal first Brillouin zone, provide a new degree of freedom for information …

The coupled cavity-waveguide approach provides a flexible platform to design integrated
photonic devices that are widely applied in optical communications and information …

Photonic topological edge states have shown powerful capabilities to manipulate light
propagations. In particular, the all-dielectric structures serve as a promising platform to …

Waveguides are fundamental components in communication systems. However, they suffer
from reflection and scattering losses at sharp routes or defects. The breakthrough in …

The valley topological edge states (VTESs) have become a new research hotspot in
topological photonics because of its flexibility and diversity. The major challenge for them …

In this study, we propose the application of non-Hermitian photonic crystals (PCs) with
anisotropic emissions. Unlike the ring of exceptional points (EPs) found in isotropic non …