for achieving high-fidelity entangling gates in multiqubit circuits. For weakly anharmonic
superconducting qubits, unwanted ZZ interactions can be suppressed by combining qubits
with opposite anharmonicity. We present experimental measurements and theoretical
modeling of two-qubit gate error for gates based on the cross resonance interaction between
a capacitively shunted flux qubit and a transmon, and demonstrate the elimination of the ZZ …