Coupling Free Electrons to a Trapped-Ion Quantum Computer.

Authors

Elias Pescoller, Santiago Beltrán-Romero, Sebastian Egginger, Nicolas Jungwirth, Martino Zanetti, Dominik Hornof, Michael S Seifner, Iva Březinová, Philipp Haslinger, Thomas Juffmann, Johannes Kofler, Dennis Rätzel, Philipp Schindler

Published in

Physical review letters. Volume 137. Issue 15. Pages 150804. Oct 09, 2026.

Abstract

Freely propagating electrons may serve as quantum probes that can become coherently correlated with other quantum systems, offering access to advanced metrological resources. We propose a setup that coherently couples free electrons in an electron microscope to a trapped-ion quantum processor, enabling nondestructive, quantum-coherent detection and the accumulation of information across multiple electrons. Our analysis shows that single electrons can induce resolvable qubit excitations, establishing a platform for practical applications such as quantum-enhanced, dose-efficient electron microscopy.

PMID:
42949458
Bibliographic data and abstract were imported from PubMed on 28 Oct 2026.

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