Some reflections upon the reduction postulate in the light of today's technology

Abstract

We pose some reflections about the reduction postulate using experimental arrangements and results within the reach of today's technology. The reduction postulates: von Neumann's and Luders'The reduction process as a postulate appears for the first time in [3] and some years later [4] was generalized to include the measurement of observables with a degenerate spectrum. In modern language they can be expressed in the following way. Let a quantum system Q be described by a density operator p~. Suppose the observable F, with discrete spectrum (fn) and eigenvectors Ifn), is to be measured Optics ISSN 09504340 print/lSSN 1362-3044 online 0 Journal o j Modern

Bell's theorem and the experiments: Increasing empirical support for local realism?

“…(In the Oviedo Conference, held in July 2002, Fry reported that important difficulties had been found. Fry´s talk was not published in the proceedings 33 ).…”

“…(In the Oviedo Conference, held in July 2002, Fry reported that important difficulties had been found. Fry´s talk was not published in the proceedings 33 ). Many other experimental tests of a Bell inequality have been performed or proposed, each one suffering from loopholes.…”