It can be solved. The superconducting quantum chip includes a coupler and a controller. The coupler is used for coupling the first superconducting bit circuit and the second superconducting bit circuit, and the frequency response curve of the coupler includes at least one phase reversal point, and the phase reversal point includes the resonant point or pole of the frequency response curve.
The controller is used to adjust the frequency response curve of the coupler so that the bit frequencies of the first and second superconducting bit circuits contain an odd number of phase inversion points between them, and to further adjust the frequency of the phase inversion points so that the equivalent interaction of the cross-resonance effects of the first and second superconducting bit circuits is zero.