Marrucci, Lorenzo and Piccirillo, Bruno and Karimi, Ebrahim and Santamato, Enrico (2009) Quantum information transfer from spin to orbital angular momentum of photons. [Pubblicazione in rivista scientifica]

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Item Type: Pubblicazione in rivista scientifica
Uncontrolled Keywords: Quantum information, orbital angular momentum, photons
Date Deposited: 21 Oct 2010 06:57
Last Modified: 30 Apr 2014 19:43


The optical ‘‘spin-orbit’’ coupling occurring in a suitably patterned nonuniform birefringent plate known as a ‘‘q plate’’ allows entangling the polarization of a single photon with its orbital angular momentum (OAM). This process, in turn, can be exploited for building a bidirectional ‘‘spin-OAM interface,’’ capable of transposing the quantum information from the spin to the OAM degree of freedom of photons and vice versa. Here, we experimentally demonstrate this process by single-photon quantum tomographic analysis. Moreover, we show that two-photon quantum correlations such as those resulting from coalescence interference can be successfully transferred into the OAM degree of freedom.

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