OSE Seminar by Dr. Jens Biegert on High Harmonic Spectroscopy: Probing Charge Density Waves and Quantum High Harmonics
Departmental News

Posted: October 25, 2025
Date: Thursday, October 30, 2025
Time: 12:30 PM to 1:45 PM
Location: CHTM, 103 and Zoom
Speaker:Dr. Jens Biegert
ICFO - The Institute of Photonic Sciences, Barcelona, Spain
Abstract:
High harmonic spectroscopy has emerged as a uniquely powerful tool to probe and control quantum materials on their natural attosecond–femtosecond timescales. In this talk, I will discuss recent advances that extend high harmonic generation from atoms and molecules to complex solids, enabling the direct observation of correlated electron dynamics in charge density wave systems. I will show how the high harmonic response encodes signatures of symmetry breaking, collective excitations, and ultrafast phase transitions. Finally, I will outline the emergence of quantum high harmonics, where the interplay of strong fields and quantum coherence opens a route to accessing and manipulating quasiparticle correlations in solids with unprecedented temporal and spectral resolution.
Biography:
