Aspect's experiment was the first quantum mechanics experiment to demonstrate the violation of Bell's inequalities with photons using distant detectors.
Notes on verification
Confirmed by Stanford Encyclopedia of Philosophy and arXiv review; nuance is that Freedman-Clauser (1972) first violated Bell's inequality with photons but not with distant/separated detectors closing the locality loophole, which is what Aspect's 1982 experiment achieved. [tier=silver indep_score=1.0 clusters=2 claim_tier=notable]
Sources
- Aspect's experiment (wikipedia)
- https://plato.stanford.edu/entries/bell-theorem/ (corroboration)
- https://arxiv.org/abs/1808.03589 (corroboration)