Laser Physics

, Volume 17, Issue 7, pp 993–1000

Experiments of quantum nonlocality with polarization-momentum entangled photon pairs

  • G. Vallone
  • P. Mataloni
  • F. De Martini
  • M. Barbieri
Quantum Optics, Laser Physics, and Spectroscopy

DOI: 10.1134/S1054660X07070146

Cite this article as:
Vallone, G., Mataloni, P., De Martini, F. et al. Laser Phys. (2007) 17: 993. doi:10.1134/S1054660X07070146
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Abstract

We present the results of some experimental tests of quantum nonlocality performed by two-photon states, entangled both in polarization and momentum, namely hyperentangled states and two-photon four-qubit linear cluster states. These states, which double the number of available qubits with respect to the standard two-photon entangled states, are engineered by a simple experimental method, which adopts linear optics and a single type I nonlinear crystal. The tests of local realism performed with these states represent a generalization of the Greenberger, Home, and Zeilinger (GHZ) theorem to the case of two entangled particles.

PACS numbers

42.50.Dv 42.50.Xa 42.50.-p 

Copyright information

© MAIK “Nauka/Interperiodica” 2007

Authors and Affiliations

  • G. Vallone
    • 1
  • P. Mataloni
    • 1
  • F. De Martini
    • 1
  • M. Barbieri
    • 2
  1. 1.Dipartimento di Fisica dell’Universitá “La Sapienza” and Consorzio Nazionale Interuniversitario per le Scienze Fisiche della MateriaRomaItaly
  2. 2.Department of PhysicsThe University of QueenslandBrisbaneAustralia