When solids are exposed to intense laser fields whose forces are comparable to the binding
forces of valence electrons in crystals, nonlinear optics of solids advances to the …

In quantum materials, emergent functional properties resulting from strong correlations or
electronic topology offer opportunities for new applications. Over the past decade, ultrafast …

Since the first demonstration of the generation of attosecond pulses (1 as= 10− 18 s) in the
extreme-ultraviolet spectral region, several measurement techniques have been introduced …

Delocalized Bloch electrons and the low-energy correlations between them determine key
optical, electronic and entanglement functionalities of solids, all the way through to phase …

The past two decades have seen rapid developments in short-pulse X-ray sources, which
have enabled the study of nuclear and electronic dynamics by ultrafast X-ray spectroscopies …

Attosecond science opened the door to observing nuclear and electronic dynamics in real
time and has begun to expand beyond its traditional grounds. Among several spectroscopic …

Ultrafast extreme ultraviolet (XUV) transient absorption is the process by which atoms and
molecules absorb light on a timescale faster than the lifetime of the states involved …

Ultrafast lasers are an increasingly important tool to control and stabilize emergent phases
in quantum materials. Among a variety of possible excitation protocols, a particularly …

The electro-optical properties of most semiconductors and insulators of technological
interest are dominated by the presence of electron-hole quasi-particles, called excitons. The …

Transition metals, with their densely confined and strongly coupled valence electrons, are
key constituents of many materials with unconventional properties, such as high …