ALEXANDRIA, Va., July 15 -- United States Patent no. 12,663,690, issued on June 23, was assigned to Arizona Board of Regents on Behalf of the University of Arizona (Tucson, Ariz.).

"Heralded photonic entanglement source" was invented by Saikat Guha (Tucson, Ariz.) and Prajit Dhara (Tucson, Ariz.).

According to the abstract* released by the U.S. Patent & Trademark Office: "Entangled optical outputs are generated using one or more heralded entanglement sources, each comprising: first and second free-running entanglement sources, each providing a first (third) optical output comprising a quantum superposition of a pair of orthogonal optical modes, and a second (fourth) optical output comprising a quantum superposition of a pair of orthogonal...