公开(公告)号：US11522618B2

公开(公告)日：2022-12-06

申请号：US17203186

申请日：2021-03-16

Applicant: Electronics and Telecommunications Research Institute

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

IPC: H04B10/70 ,  H04L9/08

Abstract: Disclosed are a quantum information transmitter, a quantum communication system including the same, and an operating method of the quantum information transmitter. The quantum information transmitter includes a light source driver, a light source, and a light modulator. The light source driver generates a first light source driving signal having a first level and a second light source driving signal having a second level. The light source generates a first light signal having a first average number of photons in response to the first light source driving signal, and generates a second light signal having a second average number of photons in response to the second light source driving signal. The optical modulator modulates the first light signal to generate a target signal, and modulates the second light signal to generate a decoy signal.