  Parasitic crosstalk in superconducting quantum devices is a leading
limitation for quantum gates. We demonstrate the suppression of static ZZ
crosstalk in a two-qubit, two-coupler superconducting circuit, where the
frequency of a tunable coupler can be adjusted such that the ZZ interaction
from each coupler destructively interfere. We verify the crosstalk elimination
with simultaneous randomized benchmarking, and use a parametrically activated
iSWAP interaction to achieve a Bell state preparation fidelity of 98.5% and a
$\sqrt{\textrm{iSWAP}}$ gate fidelity of 94.8% obtained via quantum process
tomography.
