1972/04/03 by S. J. Freedman, John F. Clauser · 3 citations
Physics and Astronomy · Computer Science · #Quantum Mechanics and Applications #Quantum Information and Cryptography #Statistical Mechanics and Entropy
paper · pdf · doi:10.1103/physrevlett.28.938
openalex publication_date 1972/04/03 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/29
We have measured the linear polarization correlation of the photons emitted in an atomic cascade of calcium. It has been shown by a generalization of Bell's inequality that the existence of local hidden variables imposes restrictions on this correlation in conflict with the predictions of quantum mechanics. Our data, in agreement with quantum mechanics, violate these restrictions to high statistical accuracy, thus providing strong evidence against local hidden-variable theories.