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.
Testing Hardy's nonlocality proof with genuine energy-time entanglement / Vallone, Giuseppe; Ilaria, Gianani; Enrique B., Inostroza; Carlos, Saavedra; Gustavo, Lima; Adán, Cabello; Mataloni, Paolo. - In: PHYSICAL REVIEW A. - ISSN 1050-2947. - 83:4(2011), pp. 042105-1-042105-5. [10.1103/physreva.83.042105]
Testing Hardy's nonlocality proof with genuine energy-time entanglement
VALLONE, GIUSEPPE;MATALONI, Paolo
2011
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.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.