Polaritons are hybrid excitations of matter and photons. In recent years, polaritons in van der
Waals nanomaterials—known as van der Waals polaritons—have shown great promise to …

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 reveal a mechanism to enhance particle-matter interactions by exploiting the pseudo-
Brewster effect of gain materials, presenting an enhancement of at least four orders of …

Hybrid nanostructures composed of graphene or other two-dimensional (2D) nanomaterials
and plasmonic metal components have been extensively studied. The unusual properties of …

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

Light–electron interaction is the seminal ingredient in free-electron lasers and dynamical
investigation of matter. Pushing the coherent control of electrons by light to the attosecond …

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

Surface plasmonics with its unique confinement of light, is expected to be a cornerstone for
future compact radiation sources and integrated photonics devices. The energy transfer …

Photonic time-crystals (PTCs) are spatially homogeneous media whose electromagnetic
susceptibility varies periodically in time, causing temporal reflections and refractions for any …

The development of X‐ray scintillators with ultrahigh light yields and ultrafast response times
is a long sought‐after goal. In this work, a fundamental mechanism that pushes the frontiers …