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. 27, 2023
Filed:
Sep. 15, 2020
Kt Corporation, Gyeonggi-do, KR;
Ji-eun Lee, Daejeon, KR;
Choon-gul Park, Daejeon, KR;
KT CORPORATION, Gyeonggi-do, KR;
Abstract
Provided are a quantum key distribution method, device, and system. The quantum key distribution system may include: a (1-1)th quantum key distribution device (QKD-); a (2-1)th quantum key distribution device (QKD-) connected to the QKD-by a first quantum channel (CH); a (3-1)th quantum key distribution device (QKD-) connected to a (1-2)th quantum key distribution device (QKD-) by a second quantum channel (CH); a first quantum node control device (QNC) for controlling the operation of the QKD-and the QKD-; a second quantum node control device (QNC) for controlling the operation of the QKD-; and a third quantum node control device (QNC) for controlling the operation of the QKD-, wherein: in the QNC, the first quantum key passes through a plurality of paths including a first path (P) for connecting the QNCand the QNC, so as to bypass the CH, thereby being transmitted to the QNC; and in the P, the key is encoded with a third quantum key shared between the QKD-and the QKD-, and is transmitted.