公开(公告)号：US11770245B2

公开(公告)日：2023-09-26

申请号：US17488955

申请日：2021-09-29

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Kyongchun Lim ,  Chun Ju Youn ,  Byung-seok Choi ,  Young-Ho Ko ,  Kap-Joong Kim ,  Minchul Kim ,  Ju Hee Baek ,  Joong-Seon Choe

IPC: H04L9/08

CPC classification number: H04L9/0855 ,  H04L9/0825 ,  H04L9/0858

Abstract: Disclosed is a quantum key distribution system using an RFI (reference frame independent) QKD (quantum key distribution) protocol, which includes a first signal processing circuit that generates transmission basis information and transmission bit information, a quantum channel transmitter that generates a single photon or coherent light, and modulates the single photon or the coherent light based on the transmission basis information and the transmission bit information to generate a quantum signal, a quantum channel receiver that receives the quantum signal through a quantum channel and detects reception bit information from the quantum signal based on reception basis information, and a second signal processing circuit that generates the reception basis information, transmits the reception basis information to the first signal processing circuit through a public channel, and receives the transmission basis information from the first signal processing circuit through the public channel.