Patent ID: 11895931
Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
Field: Computer technology (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 23:
24. A method of forming a multi-qubit chip, the method comprising:
forming a plurality of qubits on a chip, wherein each qubit comprises a trilayer Josephson junction and a capacitor connected in parallel with one another, wherein the trilayer Josephson junction comprises a first aluminum layer, an aluminum-oxide layer, and a second aluminum layer;
measuring a resonance frequency of each qubit on the chip;
determining a set-point frequency for each qubit that achieves a defined collision probability with respect to a probability of frequency collisions between adjacent qubit; and
annealing the trilayer Josephson junction of each of the plurality of qubits using a laser, based on parameters for the annealing from a database that relates the parameters to frequency shifts, to cause the resonance frequency of each of the plurality of qubits to change from the resonance frequency to the set-point frequency determined for each qubit.