公开(公告)号：US20170099139A1

公开(公告)日：2017-04-06

申请号：US15176428

申请日：2016-06-08

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Sang Wook HAN ,  Sung Wook MOON ,  Yong-Su KIM ,  Il Young KIM ,  Byungkwon PARK

IPC: H04L9/08

CPC classification number: H04L9/0852 ,  B82Y20/00 ,  H04B10/70 ,  H04L9/0858

Abstract: Disclosed is a method for stabilizing a quantum cryptography system, which includes: determining whether the quantum cryptography system operates in a stabilized state, on the basis of a bit error rate or a key rate of the quantum cryptography system; and readjusting an arrival time of a gate pulse or a laser operation time so that an arrival time of a single photon for a photon detector is aligned with the arrival time of the gate pulse, when the quantum cryptography system does not operate in a stabilized state. Here, the quantum cryptography system may be a two-way quantum cryptography system.