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:
Nov. 04, 2025
Filed:
Mar. 24, 2023
Applicant:
Fujitsu Limited, Kawasaki, JP;
Inventor:
Tetsuya Miyatake, Isehara, JP;
Assignee:
Fujitsu Limited, Kawasaki, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 6/122 (2006.01); G02B 6/13 (2006.01);
U.S. Cl.
CPC ...
G02B 6/122 (2013.01); G02B 6/13 (2013.01);
Abstract
A method of manufacturing a quantum circuit, the method includes forming, in a diamond layer that includes a color center, an optical waveguide optically coupled the color center, the diamond layer having a first principal surface and a second principal surface, wherein the optical waveguide includes: a core region that includes the color center; and an optical confinement region provided around the core region, a refractive index of the optical confinement region is lower than the refractive index of the core region.