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.
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Garuccio, A., Berardi, V. On the Validity of Clauser and Horne Factorizability. Foundations of Physics 33, 657–664 (2003). https://doi.org/10.1023/A:1023726805179
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DOI: https://doi.org/10.1023/A:1023726805179