Revisiting Bell's theorem for a class of down-conversion experiments

@article{citeulike:2424884, abstract = {A certain class of parametric down-conversion Bell-type experiments has the following features. In the idealized perfect situation it is in only 50\% of the cases that each observer receives a photon; in the other 50\% one observer receives both photons of a pair while the other observer receives none. The standard approach is to discard the events of the second type. Only the remaining ones are used as the data input to some Bell inequalities. This raises justified doubts about whether such experiments could ever be genuine tests of local realism. We propose to take into account these “unfavorable” cases and to analyze the entire pattern of polarization and localization correlations. This departure from the standard reasoning enables one to show that the experiments are indeed a true test of local realism.}, author = {Popescu, Sandu and Hardy, Lucien and \.{Z}ukowski, Marek }, citeulike-article-id = {2424884}, doi = {10.1103/PhysRevA.56.R4353}, journal = {Physical Review A}, keywords = {quantum\_information}, month = {December}, number = {6}, pages = {R4353+}, posted-at = {2008-02-25 10:14:39}, priority = {2}, publisher = {American Physical Society}, title = {Revisiting Bell's theorem for a class of down-conversion experiments}, url = {http://dx.doi.org/10.1103/PhysRevA.56.R4353}, volume = {56}, year = {1997} }

TY - JOUR ID - citeulike:2424884 L3 - citeulike-article-id:2424884 TI - Revisiting Bell's theorem for a class of down-conversion experiments JF - Physical Review A VL - 56 IS - 6 SP - R4353 PB - American Physical Society N2 - A certain class of parametric down-conversion Bell-type experiments has the following features. In the idealized perfect situation it is in only 50% of the cases that each observer receives a photon; in the other 50% one observer receives both photons of a pair while the other observer receives none. The standard approach is to discard the events of the second type. Only the remaining ones are used as the data input to some Bell inequalities. This raises justified doubts about whether such experiments could ever be genuine tests of local realism. We propose to take into account these “unfavorable” cases and to analyze the entire pattern of polarization and localization correlations. This departure from the standard reasoning enables one to show that the experiments are indeed a true test of local realism. KW - quantum_information AU - Popescu, Sandu AU - Hardy, Lucien AU - Żukowski, Marek PY - 1997/12// UR - http://dx.doi.org/10.1103/PhysRevA.56.R4353 ER -