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:
Mar. 18, 2025
Filed:
May. 10, 2022
Lockheed Martin Corporation, Bethesda, MD (US);
Joseph Robert Buck, Jr., Superior, CO (US);
LOCKHEED MARTIN CORPORATION, Bethesda, MD (US);
Abstract
Provided herein are various techniques and equipment for establishing secure non-classical communications between distant nodes. In one example, a method includes introducing, by at least one photon source, source photons into corresponding waveguides configured to convert the source photons into randomly timed pairs of resultant non-classical photons having corresponding polarization states. The method also includes providing first photons of each of the pairs for measurement of the corresponding polarization states and timing, and providing second photons of each of the pairs for combination into a beam for transfer to a distant node and establishment of a cryptographic key, where the second photons from one of the waveguides is presented in an orthogonal polarization before combination.