https://doi.org/10.1140/epjd/e2004-00199-6
Test of quantum nonlocality by full collection of polarization entangled photon pairs
Dipartimento di Fisica and
Istituto Nazionale per la Fisica della Materia,
Università di Roma “La Sapienza”, 00185 Roma, Italy
Corresponding author: a paolo.mataloni@uniroma1.it
Received:
13
July
2004
Revised:
8
October
2004
Published online:
4
January
2005
We have experimentally tested the nonlocal properties of the states generated by a high brilliance source of entanglement which allows the direct measurement of virtually all the photon pairs emitted over the emission cone at a certain wavelength. By this source we could verify the Hardy's ladder proof about contradiction between quantum mechanics and local realism for 41% of entangled photon pairs. The realization of an experimental test of quantum nonlocality with no need of supplementary assumptions is also extensively discussed.
PACS: 03.65.Ud – Entanglement and quantum nonlocality (e.g. EPR paradox, Bell's inequalities, GHZ states, etc.) / 03.67.Mn – Entanglement production, characterization and manipulation / 42.65.Lm – Parametric down conversion and production of entangled photons
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2005
