Maika Takita, Antonio D. Córcoles, et al.
Physical Review Letters
Mitigating crosstalk errors, whether classical or quantum mechanical, is critically important 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 interaction.
Maika Takita, Antonio D. Córcoles, et al.
Physical Review Letters
Markus Brink
VLSI Technology 2021
Markus Brink
APS March Meeting 2023
Baleegh Abdo, Nicholas T. Bronn, et al.
Nature Communications