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:
Sep. 01, 2026
Filed:
May. 24, 2024
Fujitsu Limited, Kawasaki, JP;
Toshiki Iwai, Atsugi, JP;
Yoshiyasu Doi, Yokohama, JP;
Kenichi Kawaguchi, Ebina, JP;
Tetsuya Miyatake, Isehara, JP;
Tetsuro Ishiguro, Kawasaki, JP;
Shintaro Sato, Atsugi, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
A quantum device includes: three first optical waveguides to which a quantum bit is coupled; a second optical waveguide; a beam splitter; a first optical switch that is provided to each of the three first optical waveguides and conducts switching between optical connection and disconnection between the first optical waveguide and the second optical waveguide; and a second optical switch that conducts switching between optical connection and disconnection between the second optical waveguide and the beam splitter.