Entangled X-Ray Photon Pair Generation by Free-Electron Lasers
Linfeng Zhang, Zunqi Li, Dongyu Liu, Chengyin Wu, Haitan Xu, Zheng Li
Abstract
We investigate entangled x-ray photon pair emissions in a free-electron laser (FEL) and establish a quantum electrodynamical theory for coherently amplified entangled photon pair emission from microbunched electron pulses in the undulator. We provide a scheme to generate highly entangled x-ray photon pairs and numerically demonstrate the properties of entangled emission, which is of great importance in x-ray quantum optics. Our work shows a unique advantage of FELs in entangled x-ray photon pair generation.
Topics & Concepts
PhysicsUndulatorPhotonPhoton entanglementLaserQuantum entanglementElectronAtomic physicsQuantum opticsSpontaneous parametric down-conversionFree electron modelQuantumQuantum mechanicsAdvanced X-ray Imaging TechniquesParticle Accelerators and Free-Electron LasersQuantum Electrodynamics and Casimir Effect