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:
Sep. 15, 2015
Filed:
Apr. 04, 2009
Jeffrey H. Hunt, Thousand Oaks, CA (US);
Barbara A. Capron, Sammamish, WA (US);
Claudio G. Parazzoli, Seattle, WA (US);
Jeffrey H. Hunt, Thousand Oaks, CA (US);
Barbara A. Capron, Sammamish, WA (US);
Claudio G. Parazzoli, Seattle, WA (US);
The Boeing Company, Chicago, IL (US);
Abstract
An ultraviolet laser generates a coherent beam, which is downconverted to produce pairs of frequency-entangled photons. For each entangled pair, a first photon is sent along a first path and a second photon is sent along a second path. A first detector detects those photons sent along the first path, and a second detector detects those photons sent along the second path. The detection is performed in a single photon regime. Coincidence counting is performed on outputs of the detectors, including comparing leading edges on outputs of the first and second detectors within a time window.