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:
Nov. 04, 2025
Filed:
Feb. 08, 2022
National University of Singapore, Singapore, SG;
Lijiong Shen, Singapore, SG;
Christian Kurtsiefer, Singapore, SG;
NATIONAL UNIVERSITY OF SINGAPORE, Singapore, SG;
Abstract
A method of identifying occurrence of a blinding attack in a quantum cryptography system, and a receiver for a quantum cryptography. The method comprises the steps of providing a light emitter at a receiver of the quantum cryptography system, wherein at least a portion of light emitted from the light emitter is detectable by a single photon detector of the receiver; switching the light emitter off during a normal operation mode of the single photon detector; measuring a first number of detection events registered in the single photon detector in a first time period, T1, with the light emitter switched on; and identifying the occurrence of the blinding attack based on the first number of detection invents.