Erlangen 2022 – scientific programme
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Q: Fachverband Quantenoptik und Photonik
Q 64: Nano-Optics III
Q 64.5: Talk
Friday, March 18, 2022, 11:30–11:45, Q-H11
Coincidence gated imaging using free electrons and photons — Armin Feist1,2, Guanhao Huang3, •Germaine Arend1,2, Yujia Yang3, Jan-Wilke Henke1,2, Arslan Sajid Raja3, F. Jasmin Kappert1,2, Rui Ning Wang3, Hugo Lourenco-Martins1,2, Junqiu Liu3, Ofer Kfir1,2, Tobias J. Kippenberg3, and Claus Ropers1,2 — 1Georg-August Universität Göttingen, Germany — 2Max Planck Institute for Biophysical Chemistry, Göttingen, Germany — 3Swiss Federal Institute of Technology, Lausanne, Switzerland
Electron microscopy can probe optical modes at the nanoscale with the light generated by a focused electron beam. In this the photonic density of states and optical transitions are mapped, while photon statistics reveal the properties and lifetime of excitations. However, current methods largely disregard correlated properties of the single electrons involved.
In this work, we demonstrate the generation of photons in a Si3N4 high-Q resonator and characterize their temporal and energetic correlation with the inelastically scattered electrons. We also show how photonic mode mapping using correlated events allows for a two-order of magnitude contrast enhancement for extremely low-intensity signals.