Metasurfaces are subwavelength structured thin films consisting of arrays of units that allow
the control of polarization, phase, and amplitude of light over a subwavelength thickness …

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 …

Topological photonics seeks to control the behaviour of the light through the design of
protected topological modes in photonic structures. While this approach originated from …

Topological insulator lasers are arrays of semiconductor lasers that exploit fundamental
features of topology to force all emitters to act as a single coherent laser. In this study, we …

Topological phases have been studied in photonic, acoustic and phononic metamaterials,
promising a range of applications. Such topological modes usually stem from collective …

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

One of the most exciting breakthroughs in physics is the concept of topology that was
recently introduced to photonics, achieving robust functionalities, as manifested in the …

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 …

Electrically pumped nanolasers have achieved many exciting achievements and display a
wide range of potential application prospects in the fields of optoelectronic chips, information …

A miniature on-chip laser is an essential component of photonic integrated circuits for a
plethora of applications, including optical communication and quantum information …