Orbital angular momentum of entangled counterpropagating photons

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Title:	Orbital angular momentum of entangled counterpropagating photons
Author:	Pérez Torres, Juan; Osorio Tamayo, Clara Inés; Torner Sabata, Lluís
Other authors:	Universitat Politècnica de Catalunya. Departament de Teoria del Senyal i Comunicacions; Universitat Politècnica de Catalunya. FOTONICA - Grup de Recerca de Fotònica
Abstract:	We elucidate the paraxial orbital angular momentum of entangled photon pairs generated by spontaneous parametric downconversion in different noncollinear geometries in which the entangled photons counterpropagate. We find, in particular, the orbital angular momentum of entangled pairs generated in transverse-emitting configurations, in which none of the known rules for selecting orbital angular momentum holds.
Abstract:	Peer Reviewed
Subject(s):	-Àrees temàtiques de la UPC::Enginyeria de la telecomunicació::Telecomunicació òptica::Fotònica -Photonics -Fotònica
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Document type:	Article - Published version Article
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