ALEXANDRIA, Va., Nov. 6 -- United States Patent no. 12,461,305, issued on Nov. 4, was assigned to Fujitsu Ltd. (Kawasaki, Japan).

"Quantum circuit, quantum computer, and method of manufacturing quantum circuit" was invented by Tetsuya Miyatake (Isehara, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "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 re...