3 ms·

Can anyone explain how the observations are used to create an instance of the CHSH game?

• Natanael_L 11y ago
  The general approach: https://en.wikipedia.org/wiki/Bell_test_experiments#A_typical_CHSH_.28two-channel.29_experiment https://en.wikipedia.org/wiki/Bell_test_experiments#A_typica... Then there's this: http://www.scottaaronson.com/blog/?p=2464#comment-829791 http://www.scottaaronson.com/blog/?p=2464#comment-829791 (also read the comment by Scott just below that one, as well as the full post) I can't provide any ELI5
  • caf 11y ago
    That's helpful, thanks. What I was after is how the apparatus in this experiment maps onto the CHSH description given by Scott (if indeed, it does). It seems clear that the x / y values are used to determine the basis of measurement of the respective detectors, the a / b values are output based on whether each detector fires, and it's the correlations based on difference between the bases that allows you to beat the game. The basis of measurement here is analogous to the angle of a polarising filter in a photon detector, but the detectors in this experiment are directly measuring the spin of the nitrogen vacancies (so what is the physical implementation of the different basis of measurement?).