Laser annealing for scalable frequency control on multi-qubit quantum processors

Superconducting qubits are attractive for scalable quantum processors given their ease of fabrication and long coherence times. A critical challenge that arises involves frequency crowding, where the as-fabricated qubit frequencies can only be set with a precision of ~2%, resulting in frequency ‘collisions’ thereby impacting gate error rates. We present LASIQ (Laser Annealing of Stochastically Impaired Qubits) as a production-scale technology capable of frequency trimming of large quantum processors (beyond 10³ qubits) and discuss its the impact on next generation architectures for quantum error correction.