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.

Date of Patent:
Sep. 22, 2026

Filed:

Mar. 22, 2021
Applicant:

British Telecommunications Public Limited Company, London, GB;

Inventor:

Andrew Lord, London, GB;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06N 3/00 (2023.01); G06N 3/084 (2023.01); H04L 9/08 (2006.01);
U.S. Cl.
CPC ...
G06N 3/084 (2013.01); H04L 9/0852 (2013.01);
Abstract

There is herein disclosed a computer-implemented method of optimizing a QKD system, the QKD system being adapted to perform a QKD session that involves the propagation of a plurality of photons from a first device to a second device, one of the first and second devices being located aboard a satellite in orbit, the method including running a machine learning algorithm, inputs of the machine learning algorithm comprising one or more values of one or more of the following factors: atmospheric conditions in the vicinity of a path from the first device to the second device; a spatial separation of the first device and the second device; and a measure of the performance of the first and/or the second device, wherein the output of the algorithm is an estimate of the rate at which the first device and the second device generate bits of a quantum key.


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