Clauser–Horne inequality
E466028
The Clauser–Horne inequality is a fundamental Bell-type inequality in quantum mechanics used to experimentally test local realism against the predictions of quantum entanglement.
All labels observed (3)
| Label | Occurrences |
|---|---|
| Clauser–Horne inequality canonical | 2 |
| CH inequality | 1 |
| Clauser-Horne inequality | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T4706892 — 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: Clauser–Horne inequality Context triple: [John F. Clauser, notableWork, Clauser–Horne inequality]
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A.
Clauser–Horne–Shimony–Holt inequality
The Clauser–Horne–Shimony–Holt inequality is a key formulation of Bell's inequality used in quantum mechanics to test the incompatibility of local hidden variable theories with the predictions of quantum entanglement.
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B.
Clauser
Clauser is the surname of John F. Clauser, an American physicist and Nobel laureate known for his pioneering experimental tests of quantum mechanics and Bell's inequalities.
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C.
Aspect experiment on Bell inequality tests (1982)
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.
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D.
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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E.
Frauchiger–Renner paradox
The Frauchiger–Renner paradox is a thought experiment in quantum foundations that extends Wigner’s friend scenario to argue that standard quantum theory cannot consistently describe its own use by multiple observers.
- 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: Clauser–Horne inequality Target entity description: The Clauser–Horne inequality is a fundamental Bell-type inequality in quantum mechanics used to experimentally test local realism against the predictions of quantum entanglement.
-
A.
Clauser–Horne–Shimony–Holt inequality
The Clauser–Horne–Shimony–Holt inequality is a key formulation of Bell's inequality used in quantum mechanics to test the incompatibility of local hidden variable theories with the predictions of quantum entanglement.
-
B.
Clauser
Clauser is the surname of John F. Clauser, an American physicist and Nobel laureate known for his pioneering experimental tests of quantum mechanics and Bell's inequalities.
-
C.
Aspect experiment on Bell inequality tests (1982)
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.
-
D.
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.
-
E.
Frauchiger–Renner paradox
The Frauchiger–Renner paradox is a thought experiment in quantum foundations that extends Wigner’s friend scenario to argue that standard quantum theory cannot consistently describe its own use by multiple observers.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
Bell-type inequality
ⓘ
concept in quantum foundations ⓘ physical law ⓘ |
| appliesTo |
bipartite systems
ⓘ
photon polarization experiments ⓘ spin-1/2 particle experiments ⓘ two-particle entangled states ⓘ |
| assumes |
freedom of choice of measurement settings
ⓘ
locality ⓘ realism ⓘ |
| category |
probabilistic inequality in physics
ⓘ
quantum nonlocality inequality ⓘ |
| characteristic |
does not assume fair sampling
ⓘ
formulated in terms of detection probabilities ⓘ linear inequality on joint and single detection probabilities ⓘ |
| contrastWith |
CHSH inequality
ⓘ
linked to:
Clauser–Horne–Shimony–Holt inequality
original Bell inequality ⓘ |
| field |
philosophy of physics
ⓘ
quantum foundations ⓘ quantum information theory ⓘ quantum mechanics ⓘ |
| hasForm | inequality involving P(A,B), P(A,B'), P(A',B), P(A',B'), P(A), P(A'), P(B), P(B') ⓘ |
| historicalContext |
developed after Bell's original inequality
ⓘ
introduced in the 1970s ⓘ |
| implies | constraints on correlations under local realism ⓘ |
| influenced |
experimental quantum optics
ⓘ
loophole-free Bell test designs ⓘ |
| motivation |
design experimentally feasible Bell tests
ⓘ
provide a test of local realism independent of detector efficiency assumptions ⓘ |
| namedAfter |
John F. Clauser
ⓘ
Michael A. Horne ⓘ |
| relatedTo |
Bell test experiments
ⓘ
linked to:
Bell test experiment
Bell's theorem ⓘ
linked to:
Bell’s theorem
CH inequality ⓘ
linked to:
Clauser–Horne inequality
Clauser–Horne–Shimony–Holt inequality ⓘ detection loophole ⓘ hidden variable theories ⓘ local realism ⓘ quantum entanglement ⓘ |
| use |
analyzing experimental data in Bell tests
ⓘ
closing the detection loophole in Bell experiments ⓘ distinguishing quantum mechanics from local hidden variable theories ⓘ testing local realism ⓘ |
| usedIn |
analysis of EPR-type experiments
ⓘ
tests of nonlocality in quantum networks ⓘ |
| violatedBy |
maximally entangled photon pairs
ⓘ
quantum mechanical predictions for entangled states ⓘ |
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: Clauser–Horne inequality Description of subject: The Clauser–Horne inequality is a fundamental Bell-type inequality in quantum mechanics used to experimentally test local realism against the predictions of quantum entanglement.
Referenced by (4)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Clauser–Horne inequality
subject linked to:
Bell’s theorem
linked to: Clauser–Horne inequality