Scientific Results

Femtosecond source of unbalanced polarization-entangled photons

Year: 2015

Authors: Mendes M.S., Fernandez L., Coelho A. S., de Miranda M. H. G., Parisio P., Bellini M., Felinto D., Cassemiro K.N.

Autors Affiliation: Departamento de Fisica, Universidade Federal de Pernambuco, 50670-901 Recife, Pernambuco, Brazil
Departamento de Engenharia, Instituto Camillo Filho, 64049-230 Teresina, Piaui, Brazil;
Istituto Nazionale di Ottica and LENS, 50019 Sesto Fiorentino, Florence, Italy

Abstract: We characterize a polarization-entangled photon source based on femtosecond pulsed parametric downconversion in a periodically poled chi ((2)) medium. Employing a Sagnac interferometer, we prepared different quantum states aiming at future investigations in quantum information and on the foundations of quantum mechanics. In this work we demonstrate the controlled generation of unbalanced entangled states, rather than the usual maximally entangled ones, by tuning the polarization of the system\’s pumping field. (C) 2015 Optical Society of America

Journal/Review: JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B: OPTICAL PHYSICS

Volume: 32 (8)      Pages from: 1670  to: 1675

More Information: Coordenadoria de Aperfeicoamento de Pessoal de Nivel Superior (CAPES); Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPq); Fundacao de Amparo a Ciencia e Tecnologia do Estado de Pernambuco (FACEPE).
KeyWords: Photons; Polarization; Quantum entanglement; Quantum optics, Entangled state; Foundations of quantum mechanics; Parametric down-conversion; Periodically poled; Polarization-entangled photons; Quantum Information; Quantum state; Sagnac interferometer, Quantum theory
DOI: 10.1364/JOSAB.32.001670

Citations: 2
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