Physics – Quantum Physics
Scientific paper
1996-08-13
Phys.Lett. A224 (1997) 314-316
Physics
Quantum Physics
3 pages, submitted to Physics Letters A
Scientific paper
10.1016/S0375-9601(96)00819-5
In Section 3 of his paper (N. Gisin, Phys. Lett. A 210 (1996) 151), Gisin argues that a ``careless application of generalized quantum measurements can violate Bell's inequality even for mixtures of product states.'' However, the observed violation of the CHSH inequality is not in fact due to the application of generalized quantum measurements, but rather to a misapplication of the inequality itself -- to conditional expectations in which the conditioning depends upon the measurements under consideration.
Berndl Karin
Teufel Stefan
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