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QUANTUM RANDOM NUMBER GENERATORS

United States Patent Application

20160328211
A1
View the Complete Application at the US Patent & Trademark Office
Los Alamos National Laboratory - Visit the Technology Transfer Division Website
Random number generators include a thermal optical source and detector configured to produce random numbers based on quantum-optical intensity fluctuations. An optical flux is detected, and signals proportional to optical intensity and a delayed optical intensity are combined. The combined signals can be electrical signals or optical signals, and the optical source is selected so as to have low coherence over a predetermined range of delay times. Balanced optical detectors can be used to reduce common mode noise, and in some examples, the optical flux is directed to only one of a pair of balanced detectors.
NORDHOLT, Jane Elizabeth (Los Alamos, NM), HUGHES, Richard John (Los Alamos, NM), NEWELL, Raymond Thorson (Santa Fe, NM), PETERSON, Charles Glen (Los Alamos, NM), ROSIEWICZ, Alexander (Stow, MA)
14/ 812,623
July 29, 2015
ACKNOWLEDGMENT OF GOVERNMENT SUPPORT [0002] This invention was made with government support under Contract No. DE-AC52-06NA25396 awarded by the U.S. Department of Energy. The government has certain rights in the invention.