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 …

In the past 20 years, we have reached a broad understanding of many light-driven
phenomena in nanoscale systems. The temporal dynamics of the excited states are instead …

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

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 …

INTRODUCTION The science of light has undergone two major revolutions over the
previous two centuries. The first—by Grimaldi, Huygens, Fresnel, Young, and Maxwell …

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

Coherent optical excitations in two-dimensional (2D) materials, 2D polaritons, can generate
a plethora of optical phenomena that arise from the extraordinary dispersion relations that …

Free-electron beams are versatile probes of microscopic structure and composition,, and
have revolutionized atomic-scale imaging in several fields, from solid-state physics to …

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

Cat states and Gottesman-Kitaev-Preskill (GKP) states play a key role in quantum
computation and communication with continuous variables. The creation of such states …