Scientific Results

Testing Hardy’s nonlocality proof with genuine energy-time entanglement

Year: 2011

Authors: Vallone G., Gianani I., Inostroza E. B., Saavedra C., Lima G., Cabello A., Mataloni P.

Autors Affiliation: Museo Storico della Fisica e Centro Studi e Ricerche “Enrico Fermi”, Via Panisperna 89/A, Compendio del Viminale, Roma I-00184, Italy;
Dipartimento di Fisica, Universit`a Sapienza di Roma, I-00185 Roma, Italy;
Center for Optics and Photonics, Universidad de Concepcion, Casilla 4016, Concepcion, Chile;
Departamento de Fısica, Universidad de Concepcion, Casilla 160-C, Concepcion, Chile;
Departamento de Fısica Aplicada II, Universidad de Sevilla, E-41012 Sevilla, Spain;
Dipartimento di Fisica, Universita Sapienza di Roma, I-00185 Roma, Italy;
Istituto Nazionale di Ottica, Consiglio Nazionale delle Ricerche (INOA-CNR), Largo E. Fermi 6, I-50125 Firenze, Italy

Abstract: We show two experimental realizations of Hardy\’s ladder test of quantum nonlocality using energy-time correlated photons, following the scheme proposed by Cabello et al. [Phys. Rev. Lett. 102, 040401 (2009)]. Unlike previous energy-time Bell experiments, these tests require precisely tailored nonmaximally entangled states. One of them is equivalent to the two-setting and two-outcome Bell test requiring a minimum detection efficiency. The reported experiments are still affected by the locality and detection loopholes, but are free of the post-selection loophole of previous energy-time and time-bin Bell tests.


Volume: 83 (4)      Pages from: 042105  to: 042105

More Information: G. L. acknowledges support from FONDECYT Grant No. 11085055 and Project No. PBCT-PDA21. A. C. acknowledges support from MICINN (Project No. FIS2008-05596) and the Wenner-Gren Foundation. C. S. acknowledges support from FONDECYT Grant No. 1080383.
DOI: 10.1103/PhysRevA.83.042105

Citations: 27
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