ArticleScience advances2023
Quantum sensing of strongly coupled light-matter systems using free electrons.
Article in Science advances, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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Who cites it
5 citing papers in PubMed, 26 citations in OpenAlex.
- Unifying frequency metrology across microwave, optical, and free-electron domains.Nature communications · 2025Article
- Strongly correlated multielectron bunches from interaction with quantum light.Science advances · 2024Article
- Electron-assisted probing of polaritonic light-matter states.Nanophotonics (Berlin, Germany) · 2024Article
- Free-electron Ramsey-type interferometry for enhanced amplitude and phase imaging of nearfields.Science advances · 2023Article
- Numerical investigation of sequential phase-locked optical gating of free electrons.Scientific reports · 2023Article
Corrections and comments
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Authors and funding
8 authors at 4 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Strong coupling in light-matter systems is a central concept in cavity quantum electrodynamics and is essential for many quantum technologies. Especially in the optical range, full control of highly connected multi-qubit systems necessitates quantum coherent probes with nanometric spatial resolution, which are currently inaccessible. Here, we propose the use of free electrons as high-resolution quantum sensors for strongly coupled light-matter systems. Shaping the free-electron wave packet enables the measurement of the quantum state of the entire hybrid systems. We specifically show how quantum interference of the free-electron wave packet gives rise to a quantum-enhanced sensing protocol for the position and dipole orientation of a subnanometer emitter inside a cavity. Our results showcase the great versatility and applicability of quantum interactions between free electrons and strongly coupled cavities, relying on the unique properties of free electrons as strongly interacting flying qubits with miniscule dimensions.
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Registered trials
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