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:
Jun. 03, 2025
Filed:
Jul. 28, 2022
Pixel Photonics Gmbh, Münster, DE;
PIXEL PHOTONICS GMBH, Münster, DE;
Abstract
The invention relates to a single-photon detector device () for detecting an optical signal, comprising an optical waveguide () and at least two nanowires (). The optical waveguide () is designed to guide the optical signal along an optical axis (), wherein the at least two nanowires () are arranged along the optical axis () relative thereto such that at least a second nanowire () is arranged in front of a first nanowire () with respect to the optical axis (), wherein the at least two nanowires () are designed to be superconductive at a specified temperature and, in the superconductive state, to generate an output signal when an intensity threshold of the optical signal is exceeded, and the at least two nanowires () are designed so as to have different intensity thresholds. The invention additionally relates to the use of the aforementioned single-photon detector device for detecting an attack during a signal transmission encrypted using a quantum key distribution.