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 …

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

Flatbands have become a cornerstone of contemporary condensed-matter physics and
photonics. In electronics, flatbands entail comparable energy bandwidth and Coulomb …

Bombardment of materials by high-energy particles often leads to light emission in a process
known as scintillation. Scintillation has widespread applications in medical imaging, x-ray …

Quantum light–matter interactions of bound electron systems have been studied extensively.
By contrast, quantum interactions of free electrons with light have only become accessible in …

This Letter sets a road map towards an experimental realization of strong coupling between
free electrons and photons and analytically explores entanglement phenomena that emerge …

Free-electron radiation such as Cerenkov, Smith–Purcell and transition radiation, can be
greatly affected by structured optical environments, as has been demonstrated in a variety of …

Dielectric laser accelerators (DLAs) are fundamentally based on the interaction of photons
with free electrons, where energy and momentum conservation are satisfied by mediation of …

Moiré superlattices—twisted van der Waals (vdW) structures with small angles—are
attracting increasing attention in condensed matter physics, due to important phenomena …

Coherent emission of light by free charged particles is believed to be successfully captured
by classical electromagnetism in all experimental settings. However, recent advances …