The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 08, 2026
Filed:
May. 16, 2024
Massachusetts Institute of Technology, Cambridge, MA (US);
Roni Winik, Somerville, MA (US);
Junyoung An, Cambridge, MA (US);
William D. Oliver, Lexington, MA (US);
Massachusetts Institute of Technology, Cambridge, MA (US);
Abstract
A system and method provide a configurable quantum logic gate. The system includes two fixed-frequency transmon qubits that are capacitively coupled to each other and to a tunable fluxonium coupler. Applying a magnetic flux to the coupler results in a controlled decrease in the ZZ interaction between the two transmon qubits. When the two transmon qubits have a small, positive ZZ interaction without any field present, applying a particular flux to the coupler effectively eliminates the interaction. Applying a larger flux produces a large, negative ZZ interaction that results in an avoided level crossing at an operational frequency. Appropriate choice of the applied flux permits implementation of, among other things, an adiabatic controlled Z (CZ) gate having high fidelity and low complexity.