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. 11, 2025
Filed:
Nov. 28, 2022
Xanadu Quantum Technologies Inc., Toronto, CA;
XANADU QUANTUM TECHNOLOGIES INC., Toronto, CA;
Abstract
A photon-number resolving (PNR) method and system are described. A PNR detector is calibrated to generate a characteristic pulse plot for each of a plurality of unique photon numbers. A generic tail portion is also stored. A signal is then detected through the PNR detector. The signal includes at least a first pulse and a second pulse, where the second pulse at least partially overlaps with the first pulse. The first photon number of the first pulse may be determined. Then, the characteristic pulse plot that corresponds to the first photon number is subtracted from the first pulse, such that the second photon number of the second pulse may be determined with minimized interference from any signal overlap. The generic tail portion may be scaled and subtracted from any identified stray events to minimize interference of stray signals from unintended light sources.