title: Generation of hybrid polarization-orbital angular momentum entangled states.
abstract: Hybrid entangled states exhibit entanglement between different degrees of freedom of a particle pair and thus could be useful for asymmetric optical quantum network where the communication channels are characterized by different properties. We report the first experimental realization of hybrid polarization-orbital angular momentum (OAM) entangled states by adopting a spontaneous parametric down conversion source of polarization entangled states and a polarization-OAM transferrer. The generated quantum states have been characterized through quantum state tomography. Finally, the violation of Bell's inequalities with the hybrid two photon system has been observed.
authors: Dipartimento di Fisica, Sapienza Università di Roma, Roma 00185, Italy.
authors: Eleonora
authors: E
authors: Nagali
authors: Fabio
authors: F
authors: Sciarrino
mesh_terms: D001464:Barium / Q000737:chemistry; D001881:Borates / Q000737:chemistry; D003461:Crystallography / Q000295:instrumentation / Q000379:methods; D001330:Electronic Data Processing / Q000295:instrumentation / Q000379:methods*; D008962:Models, Theoretical; D055095:Optics and Photonics / Q000295:instrumentation / Q000379:methods*; D017785:Photons; D011789:Quantum Theory
chemical_list: D001881:Borates; D001464:Barium