Bell experiments with random destination sources

Year: 2011

Authors: Sciarrino F., Vallone G., Cabello A., Mataloni P.

Autors Affiliation: Univ Rome, Dipartimento Fis La Sapienza, I-00185 Rome, Italy; Ist Nazl Ottica, Consiglio Nazl Ric, I-50125 Florence, Italy; Ctr Studi & Ric Enrico Fermi, I-00184 Rome, Italy; Univ Seville, Dept Fis Aplicada 2, E-41012 Seville, Spain.

Abstract: It is generally assumed that sources randomly sending two particles to one or two different observers, random destination sources (RDSs), cannot be used for genuine quantum nonlocality tests because of the postselection loophole. We demonstrate that Bell experiments not affected by the postselection loophole may be performed with (i) an RDS and local postselection using perfect detectors, (ii) an RDS, local postselection, and fair sampling assumption with any detection efficiency, and (iii) an RDS and a threshold detection efficiency required to avoid the detection loophole. These results allow the adoption of RDS setups which are simpler and more efficient for long-distance free-space Bell tests, and extend the range of physical systems which can be used for loophole-free Bell tests.

Journal/Review: PHYSICAL REVIEW A

Volume: 83 (3)      Pages from: 32112-1  to: 32112-5

More Information: This work was supported by FIRB Futuro in Ricerca-HYTEQ. A.C. acknowledges support from the Spanish MICINN Project No. FIS2008-05596.
KeyWords: Inequality
DOI: 10.1103/PhysRevA.83.032112

Citations: 15
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