Physics – Quantum Physics
Scientific paper
2008-08-13
Physics
Quantum Physics
To appear in Optics Communications
Scientific paper
10.1016/j.optcom.2008.06.050
In a recent letter [Phys. Rev. Lett. 94, 100501 (2005)], we presented a scheme for generating pure entangled states of spatial qudits ($D$-dimensional quantum systems) by using the momentum transverse correlation of the parametric down-converted photons. In this work we discuss a generalization of this process to enable the creation of mixed states. With the technique proposed we experimentally generated a mixture of two spatial qubits.
Delgado Antonio
Lima George
Neves Leonardo
Pádua Sebastião
Saavedra Carlos
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