Quantum key distribution method, device, and system

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United States of America Patent

PATENT NO 11689360
APP PUB NO 20220255736A1
SERIAL NO

17625923

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Abstract

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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 (QKD1-1); a (2-1)th quantum key distribution device (QKD2-1) connected to the QKD1-1 by a first quantum channel (CH1); a (3-1)th quantum key distribution device (QKD3-1) connected to a (1-2)th quantum key distribution device (QKD1-2) by a second quantum channel (CH2); a first quantum node control device (QNC1) for controlling the operation of the QKD1-1 and the QKD1-2; a second quantum node control device (QNC2) for controlling the operation of the QKD2-1; and a third quantum node control device (QNC3) for controlling the operation of the QKD3-1, wherein: in the QNC1, the first quantum key passes through a plurality of paths including a first path (P1) for connecting the QNC1 and the QNC3, so as to bypass the CH1, thereby being transmitted to the QNC2; and in the P1, the key is encoded with a third quantum key shared between the QKD1-2 and the QKD3-1, and is transmitted.

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Patent Owner(s)

Patent OwnerAddress
KT CORPORATION90 BULJEONGRO BUNDANG-GU SEONGNAM-SI GYEONGGI-DO 13606 13606

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Lee, Ji-eun Daejeon, KR 131 1869
Park, Choon-gul Daejeon, KR 3 10

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