New perspectives in the generation of entangled qudit states
Alessandro Rossi, Giuseppe Vallone, F. De Martini, Paolo Mataloni, Luca Businaro, Gianluca Grenci, Massimo Tormen · Journal of Modern Optics · 2008
We present a new experimental technique to generate multilevel quantum photon states based on the linear momentum degree of freedom of the photons emitted by the spontaneous parametric down conversion process.