Topological photonics is a rapidly emerging field of research in which geometrical and
topological ideas are exploited to design and control the behavior of light. Drawing …

Since the discovery that tightly focused femtosecond laser pulses can induce a highly
localised and permanent refractive index modification in a large number of transparent …

A hallmark feature of topological insulators is robust edge transport that is impervious to
scattering at defects and lattice disorder. We demonstrate a topological system, using a …

When a two-dimensional (2D) electron gas is placed in a perpendicular magnetic field, its in-
plane transverse conductance becomes quantized; this is known as the quantum Hall effect …

Topological insulators are a new class of materials that exhibit robust and scatter-free
transport along their edges—independently of the fine details of the system and of the edge …

We experimentally demonstrate topological edge states arising from the valley-Hall effect in
two-dimensional honeycomb photonic lattices with broken inversion symmetry. We break the …

We present the experimental observation of bound states in the continuum. Our experiments
are carried out in an optical waveguide array structure, where the bound state (guided …

Quantum walks, in virtue of the coherent superposition and quantum interference, have
exponential superiority over their classical counterpart in applications of quantum searching …

Quantum walk represents one of the most promising resources for the simulation of physical
quantum systems, and has also emerged as an alternative to the standard circuit model for …

The evolution of bosons undergoing arbitrary linear unitary transformations quickly becomes
hard to predict using classical computers as we increase the number of particles and modes …