Interactions between light and matter play an instrumental role in spectroscopy, sensing,
quantum information processing and lasers. In most of these applications, light is considered …

We advocate the widespread use of UV-C light as a short-term, easily deployable, and
affordable way to limit virus spread in the current SARS-CoV-2 pandemic. Radical social …

When impinging on optical structures or passing in their vicinity, free electrons can
spontaneously emit electromagnetic radiation, a phenomenon generally known as …

It is a long-standing goal to create light with unique quantum properties such as squeezing
and entanglement. We propose the generation of quantum light using free-electron …

The emission of light from charged particles underlies a wealth of scientific phenomena and
technological applications. Classical theory determines the emitted photon energy by …

Free‐electron radiation phenomena facilitate enticing potential to create light emission with
highly tunable spectra, covering hard‐to‐reach frequencies ranging from microwave to X …

Van der Waals (vdW) materials have attracted much interest for their myriad unique
electronic, mechanical, and thermal properties. In particular, they are promising candidates …

Cherenkov radiation is generally believed to be threshold‐free in hyperbolic metamaterials
owing to the extremely large photonic density of states in classical local framework. Although …

Phenomena of free-electron X-ray radiation are treated almost exclusively with classical
electrodynamics, despite the intrinsic interaction being that of quantum electrodynamics. The …

The generation of radiation from free electrons passing a grating, known as Smith–Purcell
radiation, finds various applications, including nondestructive beam diagnostics and tunable …