An analysis is made of the results of a recent polarization correlation experiment by Bovino (unpublished) where about 60,000 data have been obtained. I assume that the state of the photon pairs produced in the source (a non-linear crystal) are in a (sligh
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:0viXraPreliminaryanalysisofarecentexperimentbyF.A.BovinoEmilioSantosDepartamentodeF´ sica.UniversidaddeCantabria.Santander.SpainFebruary2,2008AbstractAnanalysisismadeoftheresultsofarecentpolarizationcorrela-tionexperimentbyBovino(unpublished)whereabout60,000datahavebeenobtained.Iassumethatthestateofthephotonpairsproducedinthesource(anon-linearcrystal)areina(sightly)non-maximallyentangledstateandthemostrelevantnon-idealitiesoftheset-uparetakenintoaccount.Acomparisonismadebetweenthepredictionsofquantummechanicsandasimplefamilyoflocalhiddenvariablesmodelswiththeresultthattheformerisviolatedbymorethan4standarddeviationswhilstthedataarecompatiblewiththefamilyoflocalmodels.Thepossibilityofmakingatruediscriminationbetweenlocalrealismandquantummechanics,vialoophole-freetestsofBell´sinequality,seemsextremelydi cultorimpossibleasshownbythefa¨ lureofthee ortsmade
duringmorethan40yearsafterBell´swork.Thusthestandardpracticehasbeentotestinequalitiesderivedfromlocalrealismplustheassumptionoffairsampling.TheseinequalitieshavebeenviolatedinmanyHoweverfairsamplingisanassumptiontheoreticallyabsurd(becauseitex-cludesallsensiblehiddenvariablesandithasbeenclaimedtobeempiricallyThus,inordertomakerealprogressweshouldtestinequalitesvalidforrestricted,butsensible,familiesoflocalhiddenvariables(LHV)theoriessuchastheonesderivedinandsumarizedinInthislightIwillanalyzetheresultsofarecentexperimentbyBovino[6].
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