Astronomy / Space Light From Ancient Quasars Helps Confirm Quantum Entanglement

[Manticore]

Last February, the MIT team and their colleagues significantly constrained the freedom-of-choice loophole, by using 600-year-old starlight to decide what properties of two entangled photons to measure. Their experiment proved that, if a classical mechanism caused the correlations they observed, it would have to have been set in motion more than 600 years ago, before the stars’ light was first emitted and long before the actual experiment was even conceived.

http://news.mit.edu/2018/light-ancient-quasars-helps-confirm-quantum-entanglement-0820

 

[Para Handy]

Good find.

“If some conspiracy is happening to simulate quantum mechanics by a mechanism that is actually classical, that mechanism would have had to begin its operations — somehow knowing exactly when, where, and how this experiment was going to be done — at least 7.8 billion years ago. That seems incredibly implausible, so we have very strong evidence that quantum mechanics is the right explanation,”

I remember watching a TeeVee prog about Bell's paper / position a long time ago, nice to read this article and see the lengths people have gone to to test it.

http://www.quantumphil.org/johnbell.htm

(Lots of stuff there.)