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21. April 2026

An electron-microscopy image of a cat, without a single electron touching the cat?

Created by Philipp Haslinger

Congratulations to Sergei Bogdanov on winning the 16th ASEM workshop Image Competition!

Coincidence imaging, also known as ghost imaging, exploits correlations between two particles to reconstruct information about a specimen. The particle carrying the spatial information remains completely non-interacting with the object, while the particle probing the object is not spatially resolved. Here, a ghost image of a cat-shaped mask is reconstructed from free-electron - cathodoluminescence-photon coincidences. Remarkably, the cat mask is only touched by the cathodoluminescence photon, although the spatial information is carried by the electron.

Ghost Imaging with Free Electron-Photon Pairs
Sergei Bogdanov, Alexander Preimesberger, Harsh Mishra, Dominik Hornof, Thomas Spielauer, Florian Thajer, Max Maurer, Pia Falb, Leo Stöger, Thomas Schachinger, Friedrich Bleicher, Michael S Seifner, Isobel C Bicket, Philipp Haslinger
arXiv:2509.14950 , opens an external URL in a new window

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