(1) NFN, Dipartimento Interateneo di Fisica, Università di Bari, Via E. Orabona 4, 70126 Bari, Italy;(2) INFM, Dipartimento Interateneo di Fisica, Politecnico di Bari, Via E. Orabona 4, 70126 Bari, Italy
Abstract:
The Clauser–Horne approach used to derive experimentally measurable quantities for performing experiments on EPR paradox based on Type-I Spontaneous Parametric Down Conversion (SPDC) sources is discussed. It is proved that in this case the deduced Bell's type inequality does not correctly express separability and causality. A deeper analysis of the problem shows that the Clauser–Horne hypothesis of factorizability of joint detection probability cannot be considered so general as to describe this physical situation.