<div class="csl-bib-body">
<div class="csl-entry">Bicket, I., Preimesberger, A., Bogdanov, S., Rembold, P., & Haslinger, P. (2026, September 21). <i>Experimental demonstration of electron-photon entanglement</i> [Conference Presentation]. 867. Wilhelm and Else Heraeus Seminar on “Quantum Electron-Photon Interactions,” Prag, Czechia. http://hdl.handle.net/20.500.12708/231369</div>
</div>
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dc.identifier.uri
http://hdl.handle.net/20.500.12708/231369
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dc.description.abstract
Electron-photon interactions have long been studied and utilized in electron microscopy (EM) for studying nanoscale optical phenomena [1] and, more recently, for developing free- electron quantum optics [2, 3]. Of particular importance in making EM into a powerful platform for quantum physics and imaging techniques is the study of correlations between electrons and cathodoluminescence (CL) photons. With correlations stronger than classical physics allows, entanglement [4] lies at the heart of quantum mechanics and provides key advantages to quantum optics experiments and applications. However, until recent experimental developments [5, 6], evidence of entanglement in EM has remained elusive. In this contribution, we experimentally demonstrate the presence of entanglement in position and momentum between an electron and the coherent CL photon that it emits upon passage through a thin membrane sample [5]. We implement coincidence (ghost) imaging in a transmission EM (TEM) [7], using a single photon counter and a spatially-resolved Timepix3 electron camera to study single electron- photon pair correlations [8]. With our setup, we are able to form an image of an object placed outside the TEM, in either the image plane or momentum plane of the photon path. From our coincidence images, we derive the joint uncertainty in both position- and momentum-spaces. The product of these two joint uncertainties violates the classical uncertainty bound [9] by more than 20 standard deviations: $\Delta x_-^2 \Delta k_+^2 \leq 0.321 \pm 0.027<1$ [5], thereby demonstrating the presence of entanglement between the electron-photon pair in the continuous variables of position and momentum. Further prospects enable the use of the same setup to test electron-photon correlations against stricter entanglement bounds or in discrete variables (e.g. [10]). This demonstration provides a pathway for the introduction of electron-photon pairs into quantum imaging techniques to exploit the unique and complementary properties of these two particles.
en
dc.language.iso
en
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dc.subject
Entanglement
en
dc.title
Experimental demonstration of electron-photon entanglement
en
dc.type
Presentation
en
dc.type
Vortrag
de
dc.type.category
Conference Presentation
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tuw.researchinfrastructure
Universitäre Service-Einrichtung für Transmissionselektronenmikroskopie
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tuw.researchTopic.id
Q2
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tuw.researchTopic.name
Quantum Metrology and Precision Measurements
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tuw.researchTopic.value
100
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tuw.publication.orgunit
E141-02 - Forschungsbereich Atom Physics and Quantum Optics
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tuw.publication.orgunit
E057-02 - Fachbereich Universitäre Serviceeinrichtung für Transmissions- Elektronenmikroskopie
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tuw.author.orcid
0000-0002-5255-4481
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tuw.author.orcid
0009-0000-7404-6165
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tuw.author.orcid
0000-0003-1405-730X
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tuw.event.name
867. Wilhelm and Else Heraeus Seminar on "Quantum Electron-Photon Interactions"
en
tuw.event.startdate
21-09-2026
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tuw.event.enddate
24-09-2026
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tuw.event.online
On Site
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tuw.event.type
Event for scientific audience
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tuw.event.place
Prag
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tuw.event.country
CZ
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tuw.event.institution
Wilhelm und Else Heraeus-Stiftung
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tuw.event.presenter
Bicket, Isobel
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tuw.event.track
Single Track
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wb.sciencebranch
Physik, Astronomie
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wb.sciencebranch.oefos
1030
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wb.sciencebranch.value
100
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item.languageiso639-1
en
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item.cerifentitytype
Publications
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item.openairecristype
http://purl.org/coar/resource_type/c_18cp
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item.grantfulltext
none
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item.fulltext
no Fulltext
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item.openairetype
conference paper not in proceedings
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crisitem.author.dept
E141-02 - Forschungsbereich Atom Physics and Quantum Optics
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crisitem.author.dept
E141-02 - Forschungsbereich Atom Physics and Quantum Optics
-
crisitem.author.dept
E141-02 - Forschungsbereich Atom Physics and Quantum Optics
