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.

Date of Patent:
Oct. 23, 2018

Filed:

Jun. 08, 2016
Applicant:

Korea Institute of Science and Technology, Seoul, KR;

Inventors:

Sang Wook Han, Seoul, KR;

Sung Wook Moon, Seoul, KR;

Yong-Su Kim, Seoul, KR;

Il Young Kim, Seoul, KR;

Byungkwon Park, Seoul, KR;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04L 9/08 (2006.01); B82Y 20/00 (2011.01); H04B 10/70 (2013.01);
U.S. Cl.
CPC ...
H04L 9/0852 (2013.01); H04L 9/0858 (2013.01); B82Y 20/00 (2013.01); H04B 10/70 (2013.01);
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.


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