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Proceedings Paper

Quantum interference by coherence transfer from spin to orbital angular momentum of photons
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Paper Abstract

The orbital angular momentum carried by single photons represents a promising resource in the quantum information field. In this paper we report the characterization in the quantum regime of a recently introduced optical device, known as q-plate. Exploiting the spin-orbit coupling that takes place in the q-plate, it is possible to transfer coherently the information from the polarization to the orbital angular momentum degree of freedom, and viceversa. Hence the q-plate provides a reliable bi-directional interface between polarization and orbital angular momentum. As a first paradigmatic demonstration of the q-plate properties, we have carried out the first experimental Hong-Ou-mandel effect purely observed in the orbital angular momentum degree of freedom.

Paper Details

Date Published: 18 May 2009
PDF: 11 pages
Proc. SPIE 7355, Photon Counting Applications, Quantum Optics, and Quantum Information Transfer and Processing II, 735507 (18 May 2009); doi: 10.1117/12.821083
Show Author Affiliations
E. Nagali, Univ. degli Studi di Roma, La Sapienza (Italy)
F. Sciarrino, Univ. degli Studi di Roma, La Sapienza (Italy)
L. Sansoni, Univ. degli Studi di Roma, La Sapienza (Italy)
F. De Martini, Univ. degli Studi di Roma, La Sapienza (Italy)
Accademia Nazionale dei Lincei (Italy)
L. Marrucci, Univ. degli Studi di Napoli Federico II (Italy)
CNR-INFM Coherentia, Univ. Monte Sant'Angelo (Italy)
B. Piccirillo, Univ. degli Studi di Napoli Federico II (Italy)
CNR-INFM Coherentia, Univ. Monte Sant'Angelo (Italy)
E. Karimi, Univ. degli Studi di Napoli Federico II (Italy)
E. Santamato, Univ. degli Studi di Napoli Federico II (Italy)
CNR-INFM Coherentia, Univ. Monte Sant'Angelo (Italy)


Published in SPIE Proceedings Vol. 7355:
Photon Counting Applications, Quantum Optics, and Quantum Information Transfer and Processing II
Miloslav Dusek; Ivan Prochazka; Roman Sobolewski, Editor(s)

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