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:
Jan. 09, 2018
Filed:
Aug. 31, 2012
Jane Elizabeth Nordholt, Los Alamos, NM (US);
Raymond Thorson Newell, Santa Fe, NM (US);
Charles Glen Peterson, Los Alamos, NM (US);
Richard John Hughes, Los Alamos, NM (US);
Jane Elizabeth Nordholt, Los Alamos, NM (US);
Raymond Thorson Newell, Santa Fe, NM (US);
Charles Glen Peterson, Los Alamos, NM (US);
Richard John Hughes, Los Alamos, NM (US);
Los Alamos National Security, LLC, Los Alamos, NM (US);
Abstract
Quantum communication transmitters include beacon lasers that transmit a beacon optical signal in a predetermined state of polarization such as one of the states of polarization of a quantum communication basis. Changes in the beacon polarization are detected at a receiver, and a retarder is adjusted so that the states of polarization in a received quantum communication optical signal are matched to basis polarizations. The beacon and QC signals can be at different wavelengths so that the beacon does not interfere with detection and decoding of the QC optical signal.