“Quantum Electrodynamics of Strong Laser Matter Interaction: The Ongoing Journey and Beyond.” (Prof. DSc. Dr. Marcelo Ciappina)

Datum: 12.11.2025
Uhrzeit: 13:30
Vortragende(r): Prof. DSc. Dr. Marcelo Ciappina
Department of Physics, Guangdong Technion - Israel Institute of Technology, 241 Daxue Road, Shantou, Guangdong, China, 515063 Technion -- Israel Institute of Technology, Haifa, 32000, Israel Guangdong Provincial Key Laboratory of Materials and Technologies for Energy Conversion, Guangdong Technion - Israel Institute of Technology, 241 Daxue Road, Shantou, Guangdong, China, 515063
Ort: Max Planck Institute of Quantum Optics, Hans-Kopferman-Straße 1, 85748 Garching
Raum: Herbert Walther Lecture Hall

Do you ever wonder about the quantum electrodynamics aspects of strong laser–matterinteractions? Strong field phenomena have fascinated scientists since the emergence of highpowerlasers more than half a century ago, providing a foundation for research in atomic,molecular, and optical physics, as well as in attosecond science, nonlinear optics, and ultrafastoptoelectronics.

Although classical electromagnetic descriptions have long been sufficient,
recent developments in fully quantized approaches are opening new perspectives. This
seminar discusses ongoing efforts to describe intense laser–atom interactions from a
quantized-field viewpoint. We focus on the generation of high-photon-number entangled
coherent states and coherent-state superpositions—phenomena inaccessible to semiclassical
theories. Applying this framework to processes such as high-harmonic generation and abovethreshold
ionization reveals new mechanisms beyond classical understanding. Finally, we
explore the extension of these ideas to complex materials and their potential relevance to
emerging quantum technologies, outlining a path that connects attosecond physics with
quantum information science.