Aspect experiment on Bell inequality tests (1982)
E324682
The Aspect experiment on Bell inequality tests (1982) was a landmark series of quantum physics experiments that provided strong evidence for quantum entanglement and the violation of Bell's inequalities, challenging local hidden-variable theories.
All labels observed (2)
How this entity was disambiguated
This entity first appeared as the object of triple T3081299 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Aspect experiment on Bell inequality tests (1982) Context triple: [Alain Aspect, notableExperiment, Aspect experiment on Bell inequality tests (1982)]
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A.
Einstein–Podolsky–Rosen paradox
The Einstein–Podolsky–Rosen paradox is a thought experiment that challenges the completeness of quantum mechanics by highlighting the strange, nonlocal correlations predicted for entangled particles.
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B.
Hanbury Brown and Twiss effect
The Hanbury Brown and Twiss effect is a quantum optical phenomenon in which correlations in the arrival times of identical particles, such as photons, reveal their underlying statistical and coherence properties.
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C.
Ives–Stilwell experiment
The Ives–Stilwell experiment is a classic test of special relativity that measured the relativistic Doppler effect to confirm time dilation for fast-moving ions.
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D.
delayed-choice experiment
The delayed-choice experiment is a quantum mechanics thought experiment and class of real experiments showing that a particle’s behavior as a wave or particle can appear to be decided by measurements made after it has entered, or even passed through, an experimental apparatus.
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E.
Wigner’s friend thought experiment
Wigner’s friend thought experiment is a foundational quantum mechanics scenario that explores the role of observers and consciousness in measurement by considering how different observers can assign conflicting quantum states to the same system.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Aspect experiment on Bell inequality tests (1982) Target entity description: The Aspect experiment on Bell inequality tests (1982) was a landmark series of quantum physics experiments that provided strong evidence for quantum entanglement and the violation of Bell's inequalities, challenging local hidden-variable theories.
-
A.
Einstein–Podolsky–Rosen paradox
The Einstein–Podolsky–Rosen paradox is a thought experiment that challenges the completeness of quantum mechanics by highlighting the strange, nonlocal correlations predicted for entangled particles.
-
B.
Hanbury Brown and Twiss effect
The Hanbury Brown and Twiss effect is a quantum optical phenomenon in which correlations in the arrival times of identical particles, such as photons, reveal their underlying statistical and coherence properties.
-
C.
Ives–Stilwell experiment
The Ives–Stilwell experiment is a classic test of special relativity that measured the relativistic Doppler effect to confirm time dilation for fast-moving ions.
-
D.
delayed-choice experiment
The delayed-choice experiment is a quantum mechanics thought experiment and class of real experiments showing that a particle’s behavior as a wave or particle can appear to be decided by measurements made after it has entered, or even passed through, an experimental apparatus.
-
E.
Wigner’s friend thought experiment
Wigner’s friend thought experiment is a foundational quantum mechanics scenario that explores the role of observers and consciousness in measurement by considering how different observers can assign conflicting quantum states to the same system.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
Bell test experiment
ⓘ
physics experiment ⓘ quantum mechanics experiment ⓘ |
| addressesLoophole | locality loophole (partially) ⓘ |
| addressesQuestion | whether local hidden-variable theories can reproduce quantum predictions ⓘ |
| awardedRecognitionTo |
Alain Aspect (later Nobel Prize in Physics 2022, partly for this work)
ⓘ
linked to:
Alain Aspect
|
| basedOnWorkOf |
John Stewart Bell
ⓘ
linked to:
John Bell
|
| challengesTheory | local hidden-variable theories ⓘ |
| confirmsPredictionOf | quantum theory for entangled photon correlations ⓘ |
| contradicts | local hidden-variable models satisfying Bell’s assumptions ⓘ |
| contributesTo | experimental confirmation of entanglement ⓘ |
| country | France ⓘ |
| demonstrates |
nonlocal correlations
ⓘ
violation of Bell inequalities ⓘ |
| findsResult | statistically significant violation of Bell inequality ⓘ |
| hasCoAuthor |
Gérard Roger
ⓘ
Philippe Grangier ⓘ |
| hasPrincipalInvestigator | Alain Aspect ⓘ |
| hasPublication | “Experimental Realization of Einstein-Podolsky-Rosen-Bohm Gedankenexperiment: A New Violation of Bell’s Inequalities” ⓘ |
| hasTimescale | rapid switching of analyzer settings compared to photon flight time ⓘ |
| implements | time-varying analyzers ⓘ |
| influencesField |
foundations of quantum mechanics
ⓘ
quantum information science ⓘ |
| location |
Institut d’Optique, Orsay, France
ⓘ
linked to:
Institut d’Optique Graduate School
|
| measurementSetting | polarizer orientations chosen during photon flight ⓘ |
| measuresProperty | polarization of photons ⓘ |
| partOf | series of Bell test experiments by Alain Aspect (1980–1982) ⓘ |
| precedes | loophole-free Bell tests of the 2010s ⓘ |
| publicationYear | 1982 ⓘ |
| publishedIn | Physical Review Letters ⓘ |
| recognizedAs | landmark experiment in quantum foundations ⓘ |
| relatedToConcept |
EPR paradox
ⓘ
linked to:
Einstein–Podolsky–Rosen paradox
Einstein–Podolsky–Rosen correlations ⓘ
linked to:
Einstein–Podolsky–Rosen paradox
hidden variables ⓘ locality ⓘ realism ⓘ |
| supportsInterpretation | nonlocality of quantum mechanics ⓘ |
| supportsTheory | quantum mechanics ⓘ |
| testsConcept |
local realism
ⓘ
quantum entanglement ⓘ |
| testsInequality |
CHSH-type Bell inequality
ⓘ
linked to:
Clauser–Horne–Shimony–Holt inequality
|
| testsTheory |
Bell inequalities
ⓘ
linked to:
Clauser–Horne–Shimony–Holt inequality
|
| usesComponent |
electro-optic modulators
ⓘ
polarizing beam splitters ⓘ |
| usesDetector | single-photon detectors ⓘ |
| usesProcess | atomic cascade in calcium ⓘ |
| usesSystem | entangled photon pairs ⓘ |
| year | 1982 ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: Aspect experiment on Bell inequality tests (1982) Description of subject: The Aspect experiment on Bell inequality tests (1982) was a landmark series of quantum physics experiments that provided strong evidence for quantum entanglement and the violation of Bell's inequalities, challenging local hidden-variable theories.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.
Aspect experiment on Bell inequality tests (1982)
→
hasPublication
→
“Experimental Realization of Einstein-Podolsky-Rosen-Bohm Gedankenexperiment: A New Violation of Bell’s Inequalities”
ⓘ
linked to: Aspect experiment on Bell inequality tests (1982)