SAMOP 2021 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 17: Quantum Effects
Q 17.13: Poster
Donnerstag, 23. September 2021, 16:30–18:30, P
Strong interaction between free electrons and high-Q whispering gallery modes — •Jan-Wilke Henke1,2, Arslan S. Raja3, Armin Feist1,2, Guanhao Huang3, Germaine Arend1,2, Yujia Yang3, F. Jasmin Kappert1,2, Rui Ning Wang3, Marcel Möller1,2, Jiahe Pan3, Junqiu Liu3, Ofer Kfir1,2, Tobias J. Kippenberg3, and Claus Ropers1,2 — 1Max Planck Institute for Biophysical Chemistry, Göttingen, Germany — 24th Physical Institute, University of Göttingen, Göttingen, Germany — 3Swiss Federal Institute of Technology Lausanne, Lausanne, Switzerland
Achieving strong coupling of electron beams with single photons promises advancements in quantum optics with free electrons and will enable observation of effects like cavity photon-mediated electron-electron entanglement.
Here, we demonstrate the interaction of a free-electron beam with a single, continuous wave-pumped optical mode of a chip-based silicon nitride microresonator [1]. Employing resonant enhancement, which allows for achieving unity electron-photon scattering efficiency at unprecedentedly low optical pump powers, we observe electron-light phase matching of the interaction. Finally, we discuss the prospect of electron-mediated photon generation and entanglement.
This combination of integrated photonics with electron microscopy enables tailoring of the electron-light interaction, which paves the way to experiments in the strong-coupling regime.
[1] J.-W. Henke, A. S. Raja, et al., preprint, arXiv:2105.03729 (2021)