BACKGROUND Optical vortices provide one of the promising solutions for enhancing the
capacity of data multiplexing to meet an unprecedented growth in big data and internet traffic …

Recent years have witnessed a flurry of research activities in topological photonics,
predominantly driven by the prospect for topological protection–a property that endows such …

Here we present a roadmap on Photonic metasurfaces. This document consists of a number
of perspective articles on different applications, challenge areas or technologies underlying …

Realizing optical analogs of quantum phenomena in atomic, molecular, or condensed
matter physics has underpinned a range of photonic technologies. Rabi splitting is a …

Integrated photonics, because of its intrinsic high speed, large bandwidth and unlimited
parallelism, is critical in the drive to ease the increasing data traffic. Its technological enabler …

The pursuit of compact lasers with low thresholds has imposed strict requirements on tight
light confinements with minimized radiation losses. Bound states in the continuum (BICs) …

Metalenses as miniature flat lenses exhibit a substantial potential in replacing traditional
optical component. Although the metalenses have been intensively explored, their functions …

The nonlinear scaling of complexity with the increased number of components in integrated
photonics is a major obstacle impeding large-scale, phase-locked laser arrays. Here, we …

Topological cavities, whose modes are protected against perturbations, are promising
candidates for novel semiconductor laser devices. To date, there have been several …

We report a two-dimensional heterogeneous Haldane model composed of alternately
stacking modified Haldane lattices with opposite next-nearest-neighbor hop**s, and …