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.
Patent No.:
Date of Patent:
May. 19, 2026
Filed:
Feb. 02, 2023
Electronics and Telecommunications Research Institute, Daejeon, KR;
Min Su Kim, Daejeon, KR;
In Gyoo Kim, Daejeon, KR;
Ki Won Moon, Daejeon, KR;
Jeong Ho Bang, Daejeon, KR;
Kyung Hyun Baek, Daejeon, KR;
Jung Jin Ju, Daejeon, KR;
ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE, Daejeon, KR;
Abstract
An apparatus for processing a photonic qubit signal includes a first optical unit to receive and transmit a time-modulated signal divided into two sections distinguished with respect to time and correspond to |0and |1states of single-photon qubit information; a second optical unit to form a first path-signal pattern by distributing the time-modulated signal into two spatial paths; a third optical unit to form a second path-signal pattern from the first path-signal pattern by inducing a relative delay and controlling a phase difference between signals on the two spatial paths; a fourth optical unit to form a third path-signal pattern through optical interference of the second path-signal pattern; and a fifth optical unit to control a phase difference between signals on the two spatial paths and form a fourth path-signal pattern through optical interference of the third path-signal pattern.