Time-correlated electron and photon counting microscopy

Abstract Electron microscopy based on high-energy electrons allows nanoscopic analytical imaging taking advantage of secondarily generated particles. Especially for cathodoluminescence, the correlation between primary incident and emitted photons includes information entire interaction process. However, electron-photon time tracking relaxation dynamics luminescent materials has so far not been achieved. In this work, we propose time-correlated electron photon counting microscopy, where coincidence events are counted after interaction. The enables extracting a unique lifetime emitter independent state, accounting coherent incoherent generation processes. We also introduce factor discuss photons. Through momentum selection, observe changes indicating presence pair originated from entanglement. present work lays foundation developing next-generation quantum correlation.