Bringing light into electron microscopy: From ultrafast plasmonics to heralded single-photon sources
- Datum: 21.11.2022
- Uhrzeit: 10:00 - 11:30
- Vortragende(r): Armin Feist
- Max Planck Institute for Multidisciplinary Sciences, Göttingen
- Ort: CFEL (Bldg. 99)
- Raum: Seminar Room IV
- Gastgeber: Franco Bonafé
Recent progress in coupling single electrons to high-Q integrated photonic microresonators
will be discussed , enabling highly efficient continuous-wave optical
phase modulation of electron beams and nanoscale-μeV spectroscopy of a
Furthermore, using a low-current stream of electrons,
spontaneous scattering at the empty cavity creates electron-photon pair
states . The single photons generated in the waveguide (1550-nm
wavelength) and corresponding electron energy loss (0.8 eV) are detected
in coincidence. In analogy to spontaneous parametric down-conversion, this
mechanism enables heralded single electron or photon sources.
In summary, these results provide an essential step towards novel hybrid quantum technology coupling single electrons and photons, as well as the capability for sub-Poissonian electron lithography, quantum-enhanced electron imaging, and Fock-state photon sources.
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