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

Electrical computers: arithmetic processing and calculating – Electrical digital calculating computer – Particular function performed

Reexamination Certificate

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Reexamination Certificate

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07844649

ABSTRACT:
Various embodiments of the present invention are directed optical-based quantum random number generators. In one embodiment, a quantum random number generator includes an input state generator that generates a first optical quantum system and a second optical quantum system in an entangled state, a detector that measures the state of the first optical quantum system and the state of the second optical quantum system, and a system control that evaluates a result obtained from measuring the state of the first optical quantum system and state of the second optical quantum system to determine whether or not to append a number associated with the result to the sequence of random numbers. The quantum random number generator also include state controllers, located between the input state generator and the detector, that are operationally controlled by the system control to maintain the entangled state, based on results obtained from previous measurements performed on the first and second optical quantum systems.

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Hewlett-Packard Development Company, L.P., EP 07755829.4-1229 (co-pending application), Nov. 25, 2009 examination report issued by EPO.
Hewlett-Packard Development Company, L.P., KR 2008-7025644 (co-pending application), English Translation of Nov. 25, 2009 Notice of Preliminary Rejection issued by KIPO.

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