Patent 8631367 was granted and assigned to NORTHROP GRUMMAN SYSTEMS CORPORATION on January, 2014 by the United States Patent and Trademark Office.
Systems and methods are provided for improving fidelity of a quantum operation on a quantum bit of interest. A controlled quantum gate operation, controlled by the quantum bit of interest, id performed on an ancillary quantum bit. An energy state of the ancillary quantum bit is measured to facilitate the improvement of the fidelity of the quantum operation.