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 …

Free electron beams such as those employed in electron microscopes have evolved into
powerful tools to investigate photonic nanostructures with an unrivaled combination of …

Quantum information, communication, and sensing rely on the generation and control of
quantum correlations in complementary degrees of freedom. Free electrons coupled to …

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 …

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

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 …

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

Tunable sources of X-ray radiation are widely used for imaging and spectroscopy in
fundamental science, medicine and industry. The growing demand for highly tunable, high …

Extracting light from silicon is a longstanding challenge in modern engineering and physics.
While silicon has underpinned the past 70 years of electronics advancement, a facile …

Metasurfaces constitute a powerful approach to generate and control light by engineering
optical material properties at the subwavelength scale. Recently, this concept was applied to …