ALEXANDRIA, Va., Oct. 27 -- United States Patent no. 12,775,861, issued on Oct. 27, was assigned to QC Ware Corp. (Palo Alto, Calif.) and Covestro Deutschland AG (Leverkusen, Germany).

"Quantum number preserving circuits for preparing quantum states representing fermions in computational units-based quantum computers" was invented by Robert Michael Parrish (Woodside, Calif.), Gian-Luca Anselmetti (Cologne, Germany) and Christian Gogolin (Cologne, Germany).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method for preparing states on a quantum computer with given particle number and total spin squared quantum numbers by means of parametrized gates. Explicit decompositions of these gates are given for an embod...