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Proceedings Paper

Single-photon source using stimulated FWM in optical fibers for quantum communication
Author(s): Álvaro J. Almeida; Nuno A. Silva; Nelson J. Muga; Armando N. Pinto
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Paper Abstract

A single-photon source based on the stimulated four-wave mixing (SFWM) process in optical fibers is presented. At the output of the source, the state of polarization (SOP) of the photons can be adjusted in order to obtain any linear polarization. A theoretical model to describe the average photon counts recorded in the avalanche photodiodes (APDs) is presented. The experimental results show an accurate detection of two non-orthogonal linear SOPs after propagation through a 60 km quantum channel, and good agreement with theory. This source, operating in a low power regime, can be used for quantum key distribution (QKD) using polarization-encoding in quantum communications.

Paper Details

Date Published: 26 July 2011
PDF: 7 pages
Proc. SPIE 8001, International Conference on Applications of Optics and Photonics, 80013W (26 July 2011); doi: 10.1117/12.891915
Show Author Affiliations
Álvaro J. Almeida, Univ. of Aveiro (Portugal)
Nuno A. Silva, Univ. of Aveiro (Portugal)
Nelson J. Muga, Univ. of Aveiro (Portugal)
Armando N. Pinto, Univ. of Aveiro (Portugal)


Published in SPIE Proceedings Vol. 8001:
International Conference on Applications of Optics and Photonics
Manuel Filipe Costa, Editor(s)

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