2 papers
quant-ph2026
Entangled photons from para-positronium decay: Do coincidences from scattered photons imply a Bell state?
Paul Joos, Peter Kling
Electron and positron can form a meta-stable bound state called positronium that decays via pair annihilation. We show how polarization-dependent Compton scattering can be used to…
quant-ph2024
Quantum free-electron laser oscillator
Peter Kling, Enno Giese
If the quantum mechanical recoil of the electron due to its scattering from the undulator and laser fields dominates the dynamics, a regime of the free-electron laser emerges where…