Generation and characterization of Werner states and maximally entangled mixed states by a universal source of entanglement.
We present a novel technique for generating two-photon polarization mixed states of any structure, which is based on the peculiar spatial characteristics of a high brilliance source of entangled pairs. Werner states and maximally entangled mixed states, two well-known families of mixed states important for quantum information, have been created and fully characterized by this technique. We have also investigated and tested the nonlocal properties of these states.
Barbieri
M
M
Dipartimento di Fisica and Istituto Nazionale per la Fisica della Materia, Università di Roma La Sapienza, 00185 Rome, Italy.
De Martini
F
F
Di Nepi
G
G
Mataloni
P
P