This is the home of Prof. Jens Biegert's Attoscience and Ultrafast Optics group at ICFO. We build attosecond and ultrafast light sources — and use them not merely to chase speed, but to open a new window into the many-body physics of matter: how charge, spin, lattice and nuclei exchange energy and entropy as materials transform and molecules react. Our work reaches from ultrafast laser development and extreme photonics to soft-X-ray spectroscopy, quantum materials, molecular imaging, and the quantum optics of high-harmonic generation.
Not just electrons. Not just fast.
Attosecond science is often told as a story about speed — the shortest pulses, the fastest electrons. Its real reach is wider: the properties of materials and the course of chemical reactions are set by the many-body interaction of electrons, holes and nuclei, and attosecond science now opens an entirely new view into it.
