The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 07, 2010
Filed:
Apr. 18, 2007
Marco Fiorentino, Mountain View, CA (US);
Raymond G. Beausoleil, Redmond, VA (US);
Sean M. Spillane, Mountain View, CA (US);
Robert Newton Bicknell, Corvallis, OR (US);
Marco Fiorentino, Mountain View, CA (US);
Raymond G. Beausoleil, Redmond, VA (US);
Sean M. Spillane, Mountain View, CA (US);
Robert Newton Bicknell, Corvallis, OR (US);
Hewlett-Packard Developmemt Company, L.P., Houston, TX (US);
Abstract
Various embodiments of the present invention are directed to self-authenticating, quantum random bit generators that can be integrated into an optoelectronic circuit. In one embodiment, a quantum random bit generator comprises a transmission layer that includes an electromagnetic radiation source coupled to a waveguide branching into a first, second, and third waveguides. The radiation source generates pulses of electromagnetic radiation in a first polarization state. Polarization rotators are operably coupled to the second and third waveguides and rotate pulses transmitted in the second waveguide into a second polarization state and rotate pulses transmitted in the third waveguide into a third polarization state. The system control generates a sequence of bits based on polarization basis states of the pulses transmitted in the first waveguide, and tomographically authenticates randomness of the sequence based on polarization basis states of the second and third pulses.