Ultrafast Charge Migration in Atoms, Molecules, and Solids

In this talk, I will discuss our theoretical developments aimed at describing the ultrafast quantum dynamics that occur during and after the interaction of atoms, molecules, and solids with intense ultrashort laser pulses. I will present several fully quantum and semiclassical approaches capable of simulating the laser-induced electronic and electron-nuclear dynamics in matter. Turning theory into practice, I will discuss the possibilities to trace the ultrafast quantum dynamics by means of attosecond transient-absorption spectroscopy and attosecond diffraction imaging. I will present applications of our developed theoretical techniques to interpret recent pioneering experiments measuring properties of matter with atomic resolution and on attosecond time scales. Advancing this area of research not only deepens our understanding of the behavior and properties of matter but may also ultimately help us comprehend the diversity of the world and even the origins of life.