Terahertz radiation has become an important diagnostic tool in the development of new
technologies. However, the diffraction limit prevents terahertz radiation (λ≈ 0.01–3 mm) …

In this brief review, we summarize and elaborate on some of the nomenclature of polaritonic
phenomena and systems as they appear in the literature on quantum materials and …

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

Ambitions to reach atomic resolution with light have been a major force in sha** nano-
optics, whereby a central challenge is achieving highly localized optical fields. A promising …

Polariton pulses—transient light-matter hybrid excitations—traveling through anisotropic
media can lead to unusual optical phenomena in space and time. However, studying these …

Lightwave-driven terahertz scanning tunnelling microscopy (THz-STM) is capable of
exploring ultrafast dynamics across a wide range of materials with ångström resolution (10 …

Electrochemical ion insertion involves coupled ion–electron transfer reactions, transport of
guest species and redox of the host. The hosts are typically anisotropic solids with 2D …

The field of two-dimensional (2D) materials-based nanophotonics has been growing at a
rapid pace, triggered by the ability to design nanophotonic systems with in situ control …

Birefringence is at the heart of photonic applications. Layered van der Waals materials
inherently support considerable out-of-plane birefringence. However, funnelling light into …

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