Key properties of quantum materials stem from dynamic interaction chains that connect
stable electronic quasiparticles through short-lived coherences, which are difficult to control …

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 …

The present status and development of strong-field nano-optics, an emerging field of
nonlinear optics, is discussed. A nonperturbative regime of light-matter interactions is …

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 …

Harnessing the carrier wave of light as an alternating-current bias may enable electronics at
optical clock rates. Lightwave-driven currents have been assumed to be essential for high …

Electronic dynamics in liquids are of fundamental importance, but time-resolved experiments
have so far remained limited to the femtosecond time scale. We report the extension of …

Photoemission spectroscopy is central to understanding the inner workings of condensed
matter, from simple metals and semiconductors to complex materials such as Mott insulators …

X-ray photoemission spectroscopy (XPS) work on Ce 2 O 3 and CeO 2 oxides has been an
active topic of research over the past four decades or so. Such research aimed to find the …

Recent progress in laser-based high-repetition rate extreme ultraviolet (EUV) light sources
and multidimensional photoelectron spectroscopy enables the build-up of a new generation …

Photoionization of matter is one of the fastest electronic processes in nature. Experimental
measurements of photoionization dynamics have become possible through attosecond …