Lithium niobate (LN), an outstanding and versatile material, has influenced our daily life for
decades—from enabling high-speed optical communications that form the backbone of the …

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 …

Abstract Effects connected with the mathematical theory of knots emerge in many areas of
science, from physics, to biology. Recent theoretical work discovered that the braid group …

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 …

The concept of synthetic dimensions has generated interest in many branches of science,
ranging from ultracold atomic physics to photonics, as it provides a versatile platform for …

Topological phases of matter have attracted significant attention in recent years, due to the
unusual robustness of their response to defects and disorder. Various research efforts have …

Non-Hermitian skin effect (NHSE) has led to interesting physics and sophisticated
applications beyond the conventional framework. However, NHSE studies have been limited …

Giant atoms that interact with real-space waveguides at multiple spatial points have attracted
extensive attention due to their unique interference effects. Here we propose a feasible …

Conventional topological insulators support boundary states with dimension one lower than
that of the bulk system that hosts them, and these states are topologically protected due to …

The concept of synthetic dimensions in photonics has attracted rapidly growing interest in
the past few years. Among a variety of photonic systems, the ring resonator system under …