Efficient Raman generation in a waveguide: A route to ultrafast quantum random number generation

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DOIResolve DOI: http://doi.org/10.1063/1.4864095
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TypeArticle
Journal titleApplied Physics Letters
ISSN0003-6951
Volume104
Issue5
Article number51117
SubjectOptical pumping; Quantum theory; Waveguides; Cryptographic key; Interaction length; Potassium titanyl phosphate; Pulse energies; Quantum phase fluctuations; Raman generation; Random number generators
AbstractThe inherent uncertainty in quantum mechanics offers a source of true randomness which can be used to produce unbreakable cryptographic keys. We discuss the development of a high-speed random number generator based on the quantum phase fluctuations in spontaneously initiated stimulated Raman scattering (SISRS). We utilize the tight confinement and long interaction length available in a Potassium Titanyl Phosphate waveguide to generate highly efficient SISRS using nanojoule pulse energies, reducing the high pump power requirements of the previous approaches. We measure the random phase of the Stokes output using a simple interferometric setup to yield quantum random numbers at 145 Mbps.
Publication date
PublisherAIP Publishing
LanguageEnglish
AffiliationNational Research Council Canada; Security and Disruptive Technologies
Peer reviewedYes
NPARC number21272833
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Record identifierd1687214-b39b-4e60-a3e0-409465dcaf07
Record created2014-12-03
Record modified2016-05-09
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