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. 01, 2026
Filed:
Jan. 05, 2023
Arqit Limited, London, GB;
Daniel Shiu, Gloucestershire, GB;
Arqit Limited, London, GB;
Abstract
A computer-implemented method for determining a lower-bound for the number of successful single-photon transmissions from a transmitter to a receiver, wherein for multiple transmissions, one or more parameters may be selected from a plurality of predetermined discrete values, the method including determining, for each value, the number of transmissions sent by the transmitter having said value; determining, for each value, the number of transmissions received by the receiver having said value; and determining an estimator based on: the determined number of sent transmissions corresponding to each of the values, the determined number of received transmissions corresponding to each of the values, and a plurality of statistical parameters each associated with a statistical model of the number of photons sent per transmission from the transmitter for a respective value of the parameters, whereby the estimator is a lower-bound for successful single-photon transmissions and is strictly non-positively biased.