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arXiv · 2601.11446

Coupling free electrons to a trapped-ion quantum computer

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

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Elias Pescoller, Santiago Beltrán-Romero, Sebastian Egginger, Nicolas Jungwirth, Martino Zanetti, Dominik Hornof, Michael S. Seifner, Iva Březinová, Philipp Haslinger, Thomas Juffmann, Johannes Kofler, Philipp Schindler, Dennis Rätzel. 2026-01-16. Coupling free electrons to a trapped-ion quantum computer. https://arxiv.org/abs/2601.11446

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