26 July 2011 Single-photon source using stimulated FWM in optical fibers for quantum communication
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Proceedings Volume 8001, International Conference on Applications of Optics and Photonics; 80013W (2011); doi: 10.1117/12.891915
Event: International Conference on Applications of Optics and Photonics, 2011, Braga, Portugal
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.
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Álvaro J. Almeida, Nuno A. Silva, Nelson J. Muga, Armando N. Pinto, "Single-photon source using stimulated FWM in optical fibers for quantum communication", Proc. SPIE 8001, International Conference on Applications of Optics and Photonics, 80013W (26 July 2011); doi: 10.1117/12.891915; https://doi.org/10.1117/12.891915
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KEYWORDS
Photons

Optical fibers

Polarization

Avalanche photodetectors

Signal processing

Avalanche photodiodes

Quantum communications

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