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:
Jan. 03, 2023

Filed:

Dec. 15, 2020
Applicant:

Korea Advanced Institute of Science and Technology, Daejeon, KR;

Inventors:

June-Koo Rhee, Daejeon, KR;

Junsang Oh, Daejeon, KR;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04L 9/08 (2006.01); H04B 10/548 (2013.01); H04B 10/64 (2013.01); H04B 10/70 (2013.01);
U.S. Cl.
CPC ...
H04L 9/0852 (2013.01); H04B 10/548 (2013.01); H04B 10/64 (2013.01); H04B 10/70 (2013.01);
Abstract

Disclosed is a time division quadrature homodyne CV QKD system, and a continuous variable quantum key distribution system which includes: a transmitter generating an optical pulse of quantum state data by using continuous light according to data of a transmission target encryption key; and a receiver separating the optical pulse received from a channel into two paths and fixing phases of two signals having a time difference of one period of the optical pulse to orthogonal phases, and then generating bit information through state detection by a time division homodyne detection from interacted signals.


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