Optical-based, self-authenticating quantum random number...

Details Optical-based, self-authenticating quantum random number... Optical-based, self-authenticating quantum random number...

2006-10-10

2010-12-07

Mai, Tan V (Department: 2193)

Electrical computers: arithmetic processing and calculating

Electrical digital calculating computer

Particular function performed

Reexamination Certificate

active

07849121

ABSTRACT:
Various embodiments of the present invention are directed to methods and systems for generating random numbers. In one embodiment, a quantum random number generator comprises: a state generator configured to generate a quantum system in a coherent state; a polarization states analyzer configured to project the quantum system onto one of four different polarization states, and detect each of the four different polarization states; a raw bit generator configured to convert the quantum system into a single photon and detect the single photon in either a first polarization state that corresponds to a first binary number or a second polarization state that corresponds to a second binary number; and a system control configured to receive signals from the polarization states analyzer and the raw bit generator, the signals corresponding to the polarization states, and output a random number based on the first and second polarization states of the single photon.

REFERENCES:
patent: 7428562 (2008-09-01), Beausoleil et al.
patent: 2001/0055389 (2001-12-01), Hughes et al.
patent: 2003036168 (2003-02-01), None
Jennewein, Thomas et al—“A Fast and Compact Quantum Random Number Generator”—Review of Scientific Instruments—vol. 71 No. 4—Apr. 4, 2000—pp. 1675-1680.
Hewlett-Packard Development Company, L.P., EP 07775953.8-1229 (co-pending application), Nov. 25, 2009 examination report issued by EPO.

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