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:
Feb. 22, 2022
Filed:
Nov. 21, 2018
Applicant:
Ut-battelle, Llc, Oak Ridge, TN (US);
Inventors:
Bing Qi, Knoxville, TN (US);
Philip G. Evans, Knoxville, TN (US);
Warren P. Grice, Oak Ridge, TN (US);
Assignee:
UT-Battelle, LLC, Oak Ridge, TN (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04L 9/08 (2006.01); H04B 10/70 (2013.01);
U.S. Cl.
CPC ...
H04L 9/0852 (2013.01); H04B 10/70 (2013.01);
Abstract
A passive continuous-variable quantum key distribution scheme, where Alice splits the output of a thermal source into two spatial modes, measures one locally and transmits the other mode to Bob after applying attenuation. A secure key can be established based on measurements of the two modes without the use of a random number generator or an optical modulator.