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|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.|
|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|
|appears in collections||IT - Comunicações|
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