US 12,414,482 B2
Frequency tuning of multi-qubit systems
Jared B. Hertzberg, Ossining, NY (US); Jason S. Orcutt, Katonah, NY (US); Hanhee Paik, Danbury, CT (US); Sami Rosenblatt, White Plains, NY (US); and Martin O. Sandberg, Ossining, NY (US)
Assigned to INTERNATIONAL BUSINESS MACHINES CORPORATION, Armonk, NY (US)
Filed by INTERNATIONAL BUSINESS MACHINES CORPORATION, Armonk, NY (US)
Filed on Feb. 2, 2024, as Appl. No. 18/431,342.
Application 18/431,342 is a continuation of application No. 15/824,492, filed on Nov. 28, 2017, granted, now 11,895,931.
Prior Publication US 2024/0180046 A1, May 30, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. H10N 60/01 (2023.01); G06N 10/40 (2022.01); H10N 60/12 (2023.01); H10N 60/80 (2023.01)
CPC H10N 60/0884 (2023.02) [G06N 10/40 (2022.01); H10N 60/0661 (2023.02); H10N 60/0912 (2023.02); H10N 60/12 (2023.02); H10N 60/805 (2023.02)] 20 Claims
OG exemplary drawing
 
1. A method of forming a multi-qubit chip, the method comprising:
forming a plurality of qubits on a chip, wherein each qubit comprises a Josephson junction and a capacitor connected in parallel with one another;
determining a respective resonance frequency of each qubit on the chip;
determining a respective set-point frequency for each qubit that achieves a defined collision probability with respect to a probability of frequency collisions between adjacent qubits; and
annealing the Josephson junction of a qubit of the plurality of qubits using a laser, based on data that relates parameters for the annealing to frequency shifts, to change the respective resonance frequency of the qubit to about the respective set-point frequency determined for the qubit.