Polaritons are a hybrid class of quasiparticles originating from the strong and resonant
coupling between light and matter excitations. Recent years have witnessed a surge of …

Polaritons, originating from the interactions between photons and material excitations, have
attracted attention because of their strong field compression and deeply subdiffractional …

The emergence of a topological transition of the polaritonic dispersion in twisted bilayers of
anisotropic van der Waals materials at a given twist angle—the photonic magic angle …

The discovery of ultraconfined polaritons with extreme anisotropy in a number of van der
Waals (vdW) materials has unlocked new prospects for nanophotonic and optoelectronic …

The lattice symmetry of a crystal is one of the most important factors in determining its
physical properties. Particularly, low-symmetry crystals offer powerful opportunities to control …

Large optical anisotropy observed in a broad spectral range is of paramount importance for
efficient light manipulation in countless devices. Although a giant anisotropy has been …

The historic Barnett effect describes how an inertial body with otherwise zero net magnetic
moment acquires spontaneous magnetization when mechanically spinning,. Breakthrough …

Recently, symmetry-broken polaritons within low-symmetry crystals have triggered extensive
research interest since they present enhanced directionality of polariton propagation for …

Layered semiconductors such as transition metal dichalcogenides (TMDs) offer endless
possibilities for designing modern photonic and optoelectronic components. However, their …

Nonlinear frequency conversion provides essential tools for generating new colors and
quantum states of light. Transition metal dichalcogenides possess huge nonlinear …