Testing Einstein-Podolsky-Rosen assumptions without inequalities with two photons or particles with spin 1/2.

摘要: A recent discovery by Hardy [Phys. Rev. Lett. 71, 1665 (1993)] is developed and extended. It shows that the inconsistency between quantum mechanics Einstein-Podolsky-Rosen assumptions about locality reality can be demonstrated for two photons or particles with spin 1/2, as in experiments test Bell inequalities, but without what Greenberger, Horne, Zeilinger discovered three four [in Bell's Theorem, Quantum Theory, Conceptions of Universe, edited M. Kafatos (Kluwer, Dordrecht, 1989), p. 74]. Here all possibilities are found. The measurement choices different particles. They described directly terms angles measurements. Hardy's result its converse both proved: almost any state will do (with made to accommodate) choice each particle a accommodate). simple example given; it allows calculations done quickly Pauli matrices.