Signal Neutral-Atom Qubit Processor 3,000-Qubit Runs Hours - Harvard/Lukin

Summary

Lukin's group at Harvard demonstrated a universal neutral-atom processor with robust error correction, operating a 3,000-qubit machine for several hours. Sustained operation at that qubit count moves the neutral-atom route into contention. The Nature source article could not be retrieved (it redirected to an authentication page that could not be verified as safe to fetch). Web search for the same claim found competing neutral-atom milestones reported in 2026, including QEra demonstrating 96 logical qubits on neutral-atom hardware, but did not surface an independently corroborating source specifically confirming the Harvard/Lukin 3,000-physical-qubit, multi-hour runtime figure beyond the existing record. No additional facts could be confirmed.