Canceling microwave crosstalk with fixed-frequency qubits

Scalable quantum information processing requires that modular gate operations can be executed in parallel. The presence of crosstalk decreases the individual addressability, causing erroneous results during simultaneous operations. For superconducting qubits which operate microwave regime, electromagnetic isolation is often limited due to design constraints, leading signal deteriorate quality Here, we propose and demonstrate a method based on alternative-current Stark effect for calibrating crosstalk. suitable processors fixed-frequency qubits, are known high coherence simple control. optimal compensation parameters reliably identified from well-defined interference pattern. We implement an array seven show its effectiveness removing majority errors.