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. 06, 2022
Filed:
Sep. 18, 2020
State Grid Fujian Electric Power Co., Ltd., Fujian, CN;
State Grid Fujian Fuzhou Electric Power Supply Company, Fujian, CN;
State Grid Info—telecom Great Power Science and Technology Co., Ltd., Fujian, CN;
Xi Chen, Fujian, CN;
Lifan Yang, Fujian, CN;
Gonghua Hou, Fujian, CN;
Xinyi Lin, Fujian, CN;
Wei Lin, Fujian, CN;
Yuanzheng Wang, Fujian, CN;
Baoping Zou, Fujian, CN;
Xincheng Huang, Fujian, CN;
Wei Chen, Fujian, CN;
Siyuan Qian, Fujian, CN;
Kai Li, Fujian, CN;
Changgui Huang, Fujian, CN;
Yuepian Ye, Fujian, CN;
Xiao Feng, Fujian, CN;
Jincheng Li, Fujian, CN;
Jiefei Lin, Fujian, CN;
Ruyin Chen, Fujian, CN;
State Grid Fujian Electric Power Co., Ltd., Fuzhou, CN;
State Grid Fujian Fuzhou Electric Power Supply Company, Fuzhou, CN;
State Grid Info-Telecom Great Power Science and Technology Co., Ltd., Xiamen, CN;
Abstract
The present disclosure relates to a quantum key distribution (QKD) method based on a tree QKD network. The method includes: judging a position of a parent node of the source node Sand a position of a parent node of the destination node S; if the parent node is a trusted relay node, directly transferring an initial shared key of the source node Sand the parent node to the destination node Saccording to an exclusive OR (XOR) relay scheme, and ending the process; and if the parent node is an untrusted relay node, emitting, by the source node Sand the destination node S, photons to a measuring-device-independent quantum key distribution (MDI-QKD) receiver of the parent node through a QKD emitter, generating a shared key by an MDI-QKD method, then transmitting the shared key according to the XOR relay scheme, and ending the process.