  Scaling the number of qubits while maintaining high-fidelity quantum gates
remains a key challenge for quantum computing. Presently, superconducting
quantum processors with >50-qubits are actively available. For such systems,
fixed-frequency transmons are attractive due to their long coherence and noise
immunity. However, scaling fixed-frequency architectures proves challenging due
to precise relative frequency requirements. Here we employ laser annealing to
selectively tune transmon qubits into desired frequency patterns. Statistics
over hundreds of annealed qubits demonstrate an empirical tuning precision of
18.5 MHz, with no measurable impact on qubit coherence. We quantify gate error
statistics on a tuned 65-qubit processor, with median two-qubit gate fidelity
of 98.7%. Baseline tuning statistics yield a frequency-equivalent resistance
precision of 4.7 MHz, sufficient for high-yield scaling beyond 1000-qubit
levels. Moving forward, we anticipate selective laser annealing to play a
central role in scaling fixed-frequency architectures.
