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 Fiber-optical communication system using polarization-encoding photons
Please use this identifier to cite or link to this item http://hdl.handle.net/10773/6283

title: Fiber-optical communication system using polarization-encoding photons
authors: Almeida, Álvaro J.
Silva, Nuno A.
Muga, Nelson J.
Pinto, Armando N.
issue date: 8-Jun-2010
publisher: Universidade do Algarve
abstract: We present a single-photon source based on the stimulated four-wave mixing process with adjustable linear state of polarization. This source allowed us to generate non-orthogonal states of polarization, that can be used for quantum key distribution experiments. The average number of photon counts as a function of the angle of the analyzer was obtained for two non-orthogonal linear states of polarization. The results show an accurate detection after propagation through a standard single-mode optical fiber with a length equal to 20 km. We also employed a master/slave configuration between two avalanche photodiodes, in order to check the probability of our single-photon source to emit pulses with more than one photon, for an average number of photons per pulse, μ ∼ 0.2, and consequently the probability of a photon to choose one of the paths. Results show that our experimental scheme is suitable for polarization-encoding experiments.
URI: http://hdl.handle.net/10773/6283
ISBN: 978-972-9341-93-9
publisher version/DOI: http://noc-conf2010.org/
source: 15th European Conference on Networks and Optical Communications/5th Conference on Optical Cabling and Infrastructure - NOC/OC&I 2010
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