In this paper we review recent results we obtained in the field of photonic quantum information that were made possible by the introduction of patterned non-uniform liquid crystal cells known as "q-plates": (i) the generation of entangled states of polarization and orbital angular momentum of a photon; (ii) the transfer of a qubit of quantum information from the spin to the orbital angular momentum of photons and vice versa; (iii) the Hong-Ou-Mandel coalescence in the same outgoing mode of a beam-splitter of two photons having nonzero orbital angular momentum; (iv) the universal optimal quantum cloning of orbital-angular-momentum-encoded qubits.
Photonic Quantum Information Applications of Patterned Liquid Crystals / L., Marrucci; Nagali, Eleonora; Sciarrino, Fabio; Sansoni, Linda; DE MARTINI, Francesco; B., Piccirillo; E., Karimi; E., Santamato. - In: MOLECULAR CRYSTALS AND LIQUID CRYSTALS. - ISSN 1542-1406. - 526:1(2010), pp. 108-118. (Intervento presentato al convegno 13th International Topical Meeting on Optics of Liquid Crystals tenutosi a Erice, ITALY nel SEP 28-OCT 02, 2009) [10.1080/15421406.2010.485118].
Photonic Quantum Information Applications of Patterned Liquid Crystals
NAGALI, ELEONORA;SCIARRINO, Fabio;SANSONI, LINDA;DE MARTINI, Francesco;
2010
Abstract
In this paper we review recent results we obtained in the field of photonic quantum information that were made possible by the introduction of patterned non-uniform liquid crystal cells known as "q-plates": (i) the generation of entangled states of polarization and orbital angular momentum of a photon; (ii) the transfer of a qubit of quantum information from the spin to the orbital angular momentum of photons and vice versa; (iii) the Hong-Ou-Mandel coalescence in the same outgoing mode of a beam-splitter of two photons having nonzero orbital angular momentum; (iv) the universal optimal quantum cloning of orbital-angular-momentum-encoded qubits.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
