Polarization-momentum hyperentangled states: Realization and characterization
Abstract
We present an experimental method to engineer polarization-momentum hyperentangled two-photon states, using linear optics and a single type-I nonlinear crystal. These states have been completely characterized and their nonlocal behavior has been verified by an “all versus nothing” test of local realism, which represents a generalization of the Greenberger-Horne-Zeilinger (GHZ) to the case of two entangled particles and two observers. The manipulation of these states may represent a useful control in quantum state engineering and Bell state measurements and, more in general, in quantum information applications.
- Publication:
-
Physical Review A
- Pub Date:
- November 2005
- DOI:
- 10.1103/PhysRevA.72.052110
- Bibcode:
- 2005PhRvA..72e2110B
- Keywords:
-
- 03.65.Ud;
- 03.67.-a;
- 03.67.Mn;
- 03.67.Hk;
- Entanglement and quantum nonlocality;
- Quantum information;
- Entanglement production characterization and manipulation;
- Quantum communication