Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Log inSign up
Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Blog
Job Board
Q3AS

© 2026 Aqora Quantum S.A.S.

TermsPrivacyLegal Notice

Conference on Lasers and Electro-Optics

Quantum Electron-Photon Entanglement in the Strong-Coupling Regime

Ofer Kfir, Claus Ropers

Published May 5, 2019• 0 citations
Publisher

Abstract

We investigate coherent interactions between cavity photons and electrons at arbitrary coupling strengths, and propose a road-map to approach this regime experimentally. As an example, we explore photon-mediated entanglement of two free electrons. © 2019 The Author(s)
DOI
10.23919/cleo.2019.8749264

Related papers

Quantum Electron-Photon Entanglement in the Strong-Coupling Regime

Ofer Kfir, Claus Ropers

We investigate coherent interactions between cavity photons and electrons at arbitrary coupling strengths, and propose a road-map to approach this regime experimentally. As an example, we explore photon-mediated entanglement of two free electrons.

Conference on Lasers and Electro-Optics•Jan 1, 2019•0 citations

Entanglements of Electrons and Cavity Photons in the Strong-Coupling Regime

Ofer Kfir

This Letter sets a road map towards an experimental realization of strong coupling between free electrons and photons and analytically explores entanglement phenomena that emerge in this regime. The proposed model unifies the strong-coupling predictions with known electron-photon interactions. Additionally, this Letter predicts a non-Columbic entanglement between freely propagating electrons. Since strong coupling can map entanglements between photon pairs onto photon-electron pairs, it may harness electron beams for quantum communication, thus far exclusive to photons.

arXiv:1902.07209•Physical Review Letters•Sep 6, 2019•189 citations

Quantum Non-Demolition Measurement through Cavity QED in the Strong-Coupling Regime

Jian Cheng Yang, Paul G. Kwiat

We theoretically study photon-photon interactions mediated by a cavity-atom system in the strong-coupling regime of cavity quantum electrodynamics (QED), which may be harnessed for quantum non-demolition (QND) measurements.

The Rochester Conferences on Coherence and Quantum Optics and the Quantum Information and Measurement meeting•Jan 1, 2013•0 citations

Quantum optics with free electrons: from quantum sensing to strong coupling and single-photon nonlinearity

Aviv Karnieli, Charles Roques‐Carmes, Renwen Yu +1 more

Free electrons are an emerging new type of quantum probe, with high quantum coherence, sub fsec – sub-nm resolution, high tunability and pristine coherent control. Recent experimental and theoretical advancements showcased the quantum nature of the interaction between a free electron and light and bound-electron qubits, with demonstrations of strong electron-photon coupling and coincidence, and proposals for quantum light generation.

Optical and Quantum Sensing and Precision Metrology II•Mar 19, 2025•0 citations

Photon-photon interaction in strong-coupling cavity-atom system

Jian Cheng Yang, Paul G. Kwiat

We study photon-photon interactions mediated by a cavity-atom system in the strongcoupling regime of cavity quantum electrodynamics (QED). Different temporal shapes of the incident photons have been explored via numerical calculations. Especially, time-reversed photons can be in the cavity simultaneously and potentially acquire strong interaction with each other, advancing quantum information applications, e.g., quantum non-demolition (QND) measurement.

AIP conference proceedings•Jan 1, 2014•1 citation

Strong light-matter interactions in hybrid polaritonic systems

Ben Johns, Andrea Schirato, Federico Toffoletti +12 more

Strong light-matter coupling gives rise to polaritons - hybrid excitations whose mixed photonic and matter character enables control over optical, electronic and chemical properties. This Feature Article surveys the main architectures supporting polariton formation, including photonic microcavities, plasmonic nanostructures, open cavities and metasurfaces, and outlines how inorganic semiconductors, organic aggregates and hybrid systems access strong and ultrastrong coupling. Key phenomena such as coherent dynamics, vibronic interactions, dark-state reservoirs and polariton-mediated energy and electron transport are discussed, together with the experimental and theoretical tools used to study them. We highlight examples where strong coupling modifies charge transport, energy flow and chemical reactivity, and we summarize emerging regimes, including intermediate and dark-strong coupling, that broaden the landscape of hybrid light-matter physics.

physics.opticsCross-listedarXiv:2605.01583•May 5, 2026
This Letter sets a road map towards an experimental realization of strong coupling between free electrons and photons and analytically explores entanglement phenomena that emerge in this regime. The proposed model unifies the strong-coupling predictions with known electron-photon interactions. Additionally, this Letter predicts a non-Columbic entanglement between freely propagating electrons. Since strong coupling can map entanglements between photon pairs onto photon-electron pairs, it may harness electron beams for quantum communication, thus far exclusive to photons.
Strong light-matter coupling gives rise to polaritons - hybrid excitations whose mixed photonic and matter character enables control over optical, electronic and chemical properties. This Feature Article surveys the main architectures supporting polariton formation, including photonic microcavities, plasmonic nanostructures, open cavities and metasurfaces, and outlines how inorganic semiconductors, organic aggregates and hybrid systems access strong and ultrastrong coupling. Key phenomena such as coherent dynamics, vibronic interactions, dark-state reservoirs and polariton-mediated energy and electron transport are discussed, together with the experimental and theoretical tools used to study them. We highlight examples where strong coupling modifies charge transport, energy flow and chemical reactivity, and we summarize emerging regimes, including intermediate and dark-strong coupling, that broaden the landscape of hybrid light-matter physics.