ALEXANDRIA, Va., Nov. 6 -- United States Patent no. 12,461,310, issued on Nov. 4, was assigned to PsiQuantum Corp. (Palo Alto, Calif.).

"Multi-mode multi-pass delay" was invented by Mark Thompson (Palo Alto, Calif.).

According to the abstract* released by the U.S. Patent & Trademark Office: "An optical device includes a first plurality of waveguides including a first waveguide and a second waveguide and a multimode waveguide delay comprising a first end and a second end. The first waveguide and the second waveguide are coupled to the first end of the multimode waveguide delay. The first waveguide is coupled to a first optical mode in the multimode waveguide delay. The second waveguide is coupled to a second optical mode in the multimode w...