Free-Electron Quantum Optics: Coherent Control, Correlations, and Entanglement
- MP Department Seminar
- Date: Feb 27, 2026
- Time: 09:30 AM - 10:30 AM (Local Time Germany)
- Speaker: Prof. Claus Ropers
- Max Planck Institute for Multidisciplinary Sciences, Göttingen, Germany
- Location: Building K, Haber-Villa, Faradayweg 8, 14195 Berlin
- Room: Seminar Room
- Host: Department of Molecular Physics
- Contact: meijer@fhi-berlin.mpg.de
Free electrons interact coherently with optical near fields, linking electron microscopy with quantum optics. This talk highlights advances in phase-sensitive electron control, cavity-mediated electron–photon correlations, and the first observation of free-electron–photon entanglement.
Beyond single-electron physics, Coulomb interactions in ultrashort pulses generate strong few-electron correlations. Together, these results establish free-electron quantum optics as a platform for controlled quantum-state preparation and readout on ultrafast and nanoscale scales.