Entangled X-Ray Photon Pair Generation by Free-Electron Lasers.

作者信息

Zhang Linfeng, Li Zunqi, Liu Dongyu, Wu Chengyin, Xu Haitan, Li Zheng

机构信息

State Key Laboratory for Mesoscopic Physics and Frontiers Science Center for Nano-optoelectronics, School of Physics, Peking University, Beijing 100871, China.

Physics Department, Stanford University, California 94305, USA.

出版信息

Phys Rev Lett. 2023 Aug 18;131(7):073601. doi: 10.1103/PhysRevLett.131.073601.

DOI:10.1103/PhysRevLett.131.073601

PMID:37656859

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.

摘要