Berlin 2024 – scientific programme
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HL: Fachverband Halbleiterphysik
HL 20: Focus Session: Young Semiconductor Forum
HL 20.2: Invited Talk
Tuesday, March 19, 2024, 10:00–10:30, EW 203
Merging electron microscopy with advanced photonics — •Armin Feist1,2, Guanhao Huang3,4, Germaine Arend1,2, Yujia Yang3,4, Jan-Wilke Henke1,2, Arslan Sajid Raja3,4, F. Jasmin Kappert1,2, Rui Ning Wang3,4, Hugo Lourenço-Martins1,2, Qiu Zheru3,4, Junqiu Liu1,2, Ofer Kfir3,4, Tobias J. Kippenberg3,4, and Claus Ropers1,2 — 1Max Planck Institute for Multidisciplinary Sciences, Göttingen, DE — 24th Physical Institute, University of Göttingen, DE — 3Institute of Physics, EPFL, Lausanne, CH — 4Center for Quantum Science and Engineering, EPFL, Lausanne, CH
Introducing light optics in state-of-the-art electron microscopes enabled quantum-coherent electron-light interaction [1] and the study of ultrafast nanoscale processes using coherent electron pulses [2]. Recently, high-Q integrated photonics extended these capabilities to continuous electron beams for µeV-resolved electron spectroscopy [3].
Here, we show the coupling of single electrons and photons at a high-Q integrated photonic microresonator [4]. Spontaneous scattering at empty resonator modes creates electron-photon pair states [5], enabling single-particle heralding schemes and noise-suppressed mode imaging. This provides a pathway towards novel hybrid quantum technology with entangled electrons and photons as well as electron-probing with tailored sensitivity for specific material excitations.
[1] A. Feist et al., Nature 521, 200 (2015). [2] A. Feist et al., Ultramicroscopy 176, 63 (2017). [3] J.-W. Henke et al., Nature 600, 653 (2021). [4] A. Feist et al., Science. 377, 777 (2022). [5] X. Bendaña et al., Nano Lett. 11, 5099 (2011).
Keywords: ultrafast electron microscopy; integrated photonics; electron energy gain spectroscopy; coherent electron pulses; electron-photon pair states