Source on Alain Aspect

“[W]e... approach... from a new angle. ...[W]e start from the assumption that quantum optics contains, in its mathematical formalism, the answer.... [T]he conceptual difficulty... has been due to the lack of transparency in its mathematical framework. We can formulate this hypothesis in two distinct statements: 1. Quantum optics is complete. 2. The connection between the two photons is due to their common source.”

“The second statement relates... that a common source for both photons of an entangled pair is a common feature in all Aspect-type experiments. ...[T]hese ...insights are sufficient to develop a model of photon entanglement accounting for all features in the experiments.”

“Experiments with time-like separation... were only possible about twenty years after the first experiments by Aspect.”