The topological properties of an object, associated with an integer called the topological
invariant, are global features that cannot change continuously but only through abrupt …

Recent advancements in photonic bound states in the continuum (BICs) have opened up
exciting new possibilities for the design of optoelectronic devices with improved …

Photons with spin angular momentum possess intrinsic chirality, which underpins many
phenomena including nonlinear optics, quantum optics, topological photonics and …

Optical metasurfaces with high quality factors (Q-factors) of chiral resonances can boost
substantially light-matter interaction for various applications of chiral response in ultrathin …

Arbitrary polarized vortex beam induced by polarization singularity offers a new platform for
both classical optics and quantum entanglement applications. Bound states in the …

Optical metasurfaces with high-quality-factor resonances and selective chirality
simultaneously are desired for nanophotonics. Here, an all-dielectric planar chiral …

Recent rapid progress in metasurfaces is underpinned by the physics of local and nonlocal
resonances and the modes coupling among them, leading to tremendous applications such …

The realization of lossless metasurfaces with true chirality crucially requires the fabrication of
three-dimensional structures, constraining experimental feasibility and hampering practical …

Mie-resonant metaphotonics is a rapidly developing field that employs the physics of Mie
resonances to control light at the nanoscale. Mie resonances are excited in high-refractive …

Over the years, researchers have been exploring ways to artificially design chiral structures
and materials, namely metamaterials and metasurfaces. They exhibit unique optical …