ALEXANDRIA, Va., Oct. 6 -- United States Patent no. 12,756,546, issued on Oct. 6, was assigned to Ciena Corp. (Hanover, Md.).

"Quantum key distribution in an optical network and quantum-secured optical channels" was invented by Farzam Toudeh-Fallah (Galena, Ohio), Robert W. Keys (Stittsville, Canada) and David W. Boertjes (Nepean, Canada).

According to the abstract* released by the U.S. Patent & Trademark Office: "Systems and methods for quantum key distribution in an optical network and quantum-secured optical channels. A node for operation in an optical network includes one or more degrees each connected to a corresponding optical span including one or more fibers; and one or more Quantum-Optical Service modules (QOSM) for each of the o...