HRL's silicon quantum processor runs error-correcting codes autonomously, per Nature
lxfater · x · 2026-08-19
HRL Laboratories published a digitally controlled silicon quantum processing unit in Nature. Clarification: not the "thousands of qubits" circulating online — the chip is an array of 54 quantum dots, configurable into up to 18 exchange-only qubits.
The breakthrough is integrating a cryogenic CMOS controller directly inside the cryostat plus high-density superconducting ribbon cabling. Results:
- Single-qubit gate error down to 1.7×10⁻⁴
- Average CNOT error 3.5×10⁻³ (best reproducible 9×10⁻⁴)
- Charge noise 10x lower than prior exchange-only demonstrations
- Autonomously runs a distance-5 repetition code and a distance-2 error-detecting code without real-time room-temperature control
With nearly all components using wafer semiconductor processes, it's a real step toward scalable, manufacturing-compatible control.
Related event: HRL's Silicon Quantum Processor Published in Nature(2 posts)→
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