The motion of electrons on the atomic scale has been hidden from direct experimental
access until recently. We review the revolution in technology that opened the door to real …

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

Harmonic generation is a general feature of driven nonlinear systems. In particular high-
order harmonic generation (HHG) in atomic gases is the basis for producing attosecond …

When intense light interacts with an atomic gas, recollision between an ionizing electron and
its parent ion creates high-order harmonics of the fundamental laser frequency. This sub …

The superposition of quantum states drives motion on the atomic and subatomic scales, with
the energy spacing of the states dictating the speed of the motion. In the case of electrons …

Acceleration and collision of particles has been a key strategy for exploring the texture of
matter. Strong light waves can control and recollide electronic wavepackets, generating high …

Advances in attosecond science have led to a wealth of important discoveries in atomic,
molecular, and solid-state physics and are progressively directing their footsteps toward …

Attosecond science offers formidable tools for the investigation of electronic processes at the
heart of important physical processes in atomic, molecular and solid-state physics. In the last …

The microscopic valence electron density determines the optical, electronic, structural and
thermal properties of materials. However, current techniques for measuring this electron …

During femtosecond laser fabrication, photons are mainly absorbed by electrons, and the
subsequent energy transfer from electrons to ions is of picosecond order. Hence, lattice …