Resonance frequency adjustment for fixed-frequency qubits

A nonlinear resonator device comprising:

• a first capacitor pad comprising a superconducting material, the first capacitor pad configured to couple to a first end of a logic circuit element;
• a second capacitor pad comprising a second superconducting material, the capacitor pad configured to couple to a second end of the logic circuit element, the second capacitor pad comprising;
• a first portion;
• a second portion;
• and
• a bridge configured to electrically connect the first portion and the second portion.

A superconductor fabrication system comprising a lithography component, the superconductor fabrication system when operated to fabricate a superconducting device performing operations comprising:

• forming a capacitor pad for a nonlinear resonator;
• comparing a resonance frequency of the nonlinear resonator to a target frequency to determine whether the resonance frequency falls within a range of the target frequency;
• and
• removing, responsive to the resonance frequency failing to fall within the range, a portion of the capacitor pad.