  High-fidelity universal quantum gates are widely acknowledged as essential
for scalable quantum computation. However, in solid-state quantum systems,
which hold promise as physical implementation platforms for quantum
computation, the inevitable $ZZ$ crosstalk resulting from interqubit
interactions significantly impairs quantum operation performance. Here we
propose a scalable protocol to achieve $ZZ$-crosstalk mitigation in universal
quantum gates. This method converts the noisy Hamiltonian with $ZZ$ crosstalk
into a framework that efficiently suppresses all $ZZ$-crosstalk effects,
leading to ideal target quantum operations. Specifically, we first analytically
derive the $ZZ$-crosstalk mitigation conditions and then apply them to enhance
the performance of target universal quantum gates. Moreover, numerical
simulations validate the effectiveness of $ZZ$-crosstalk mitigation when
multiple qubit gates operate concurrently. As a result, our protocol presents a
promising approach for implementing practical parallel quantum gates in
large-scale quantum computation scenarios.
