Spin Correlated Interferometry on Beam Splitters: Preselection of Spin Correlated Photons
نویسنده
چکیده
A nonclassical feature of the fourth–order interference at a beam splitter, that genuine photon spin singlets are emitted in predetermined directions even when incident photons are unpolarized, has been used in a proposal for an experiment that imposes quantum spin correlation on truly independent photons. In the experiment two photons from two such singlets interfere at a beam splitter, and as a result the other two photons—which nowhere interacted and whose paths nowhere crossed—exhibit a 100% correlation in polarization, even when no polarization has been measured in the first two photons. The propsed experiment permits closure of the remaining loopholes in the Bell theorem proof, reveals the quantum nonlocality as a property of selection, and pioneers an experimental procedure for exact preparation of unequal superposition. PACS numbers: 42.50.Wm, 03.65.Bz
منابع مشابه
Physical Review A 50, 3486–3491 (1994) SPIN CORRELATED INTERFEROMETRY FOR POLARIZED AND UNPOLARIZED PHOTONS ON A BEAM SPLITTER
Spin interferometry of the 4th order for independent polarized as well as unpolarized photons arriving simultaneously at a beam splitter and exhibiting spin correlation while leaving it, is formulated and discussed in the quantum approach. Beam splitter is recognized as a source of genuine singlet photon states. Also, typical nonclassical beating between photons taking part in the interference ...
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