Perimeter Institute will host an international conference from July 18-21, 2006, in honour of Abner Shimony, one of the most eminent physicist-philosophers of our time.
With specific settings of GHZ experiments, it is possible to demonstrate absolute contradictions between the predictions of local hidden variable theory and those of quantum mechanics, whereas tests of Bell's inequality only demonstrate contradictions of a statistical nature. Horne, and Anton Zeilinger (GHZ) who first analyzed certain measurements involving four observers.
The results of actual GHZ experiments agree with the predictions of quantum mechanics. of a GHZ state is three photons in an entangled state, with the photons being in a superposition of being all horizontally polarized (HHH) or all vertically polarized (VVV), with respect to some coordinate system.
GHZ experiments are a class of physics experiments that may be used to generate starkly contrasting predictions from local hidden variable theory and quantum mechanical theory, and permit immediate comparison with actual experimental results.
A GHZ experiment is similar to a test of Bell's inequality, except using three or more entangled particles, rather than two.
A hundred times every day I remind myself that my inner and outer life are based on the labors of other men, living and dead, and that I must exert myself in order to give in the same measure as I have received and am still receiving...