Optics and Spectroscopy

, Volume 103, Issue 1, pp 129–136

Polarization-momentum hyper-entangled two photon states

  • M. Barbieri
  • G. Vallone
  • F. De Martini
  • P. Mataloni
Quantum States of Optical Fields and Their Use in Quantum Informatics

DOI: 10.1134/S0030400X0707020X

Cite this article as:
Barbieri, M., Vallone, G., De Martini, F. et al. Opt. Spectrosc. (2007) 103: 129. doi:10.1134/S0030400X0707020X

Abstract

We present a parametric source which allows the engineering of polarization-momentum hyperentangled two photon states based on linear optics and a single type-I nonlinear crystal. The nonlocal character of these states has been verified by various tests, including the “All Versus Nothing” test of local realism [A. Cabello, Phys. Rev. Lett. 87, 010403 (2001)], which represents a generalization of the GHZ to the case of two entangled particles and two observers. We have also created a complete and deterministic Bell-state measurement by a novel experimental scheme which adopts polarization-momentum hyper-entanglement and requires linear optics and single photon detectors.

PACS numbers

03.65.Ud03.67.-a03.67.Mn03.67.Hk42.50.Xa

Copyright information

© Pleiades Publishing, Ltd. 2007

Authors and Affiliations

  • M. Barbieri
    • 1
  • G. Vallone
    • 1
    • 2
  • F. De Martini
    • 1
  • P. Mataloni
    • 1
  1. 1.Dipartimento di Fisica dell’Universitá “La Sapienza” and Consorzio Nazionale Interuniversitario per le Scienze Fisiche della MateriaRomaItaly
  2. 2.Dipartimento di Fisica Teorica dell’Università di Torino and INFN—sezione di TorinoTorinoItaly
  3. 3.School of Physical Sciencesthe University of QueenslandBrisbaneAustralia