Topological photonics has attracted increasing attention in recent years due to the unique
opportunities it provides to manipulate light in a robust way immune to disorder and defects …

Future technologies underpinning multifunctional physical and chemical systems and
compact biological sensors will rely on densely packed transformative and tunable circuitry …

Lanthanide-doped upconversion nanoparticles emerged recently as an attractive material
platform underpinning a broad range of innovative applications such as optical …

Topological states of light represent counterintuitive optical modes localized at boundaries
of finite-size optical structures that originate from the properties of the bulk. Being defined by …

Halide perovskite nano-and microlasers have become a very convenient tool for many
applications from sensing to reconfigurable optical chips. Indeed, they exhibit outstanding …

Topological insulators are a class of electronic materials exhibiting robust edge states
immune to perturbations and disorder. This concept has been successfully adapted in …

The study of topological phases of light suggests novel opportunities for creating robust
optical structures and on‐chip photonic devices which are immune against scattering losses …

Topological photonics mimicking topological insulators has recently attracted considerable
attention. The Su–Schrieffer–Heeger (SSH) model, which is a fundamental topological …

We demonstrate the effect of spin-momentum locking of upconversion photoluminescence
emitted from rare-earth doped nanocrystals coupled to a phase-gradient dielectric …

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