• Our quantum hardware: the engine for verifiable quantum advantage Oct 22, 2025 Today’s first-ever verifiable quantum advantage was made possible by decades of investment in hardware and scientific discovery. • Today, powered by our high-performance quantum chip,Willow, we have achieved thefirst-ever demonstration of verifiable quantum advantage. • This milestone is a critical step toward realizing useful quantum computation, a feat made possible by the precision and speed engineered into our quantum hardware systems. • Willow: engineering best-in-class performance Willow, our state-of-the-art quantum chip, is built from superconducting quantum circuits. • This field of research began with the groundbreaking discovery of the macroscopic quantum effect in 1985, an achievement that earned John Clarke, Michel Devoret, and John Martinis the status of 2025 Physics Nobel Laureates. • Utilizing these circuits, superconducting qubits function as macroscopic “artificial atoms.” Over the past 40 years, driven by the mature integrated circuit fabrication and active research in both academia and industry, these qubits have demonstrated an excellent balance of performance and scalability.
Article Summaries:
- Google announced that its 105‑qubit superconducting chip, Willow, has achieved the first verifiable quantum advantage. The device, built with high‑fidelity single‑qubit (99.97 %) and entangling (99.88 %) gates and 99.5 % readout, executed the Quantum Echoes algorithm-requiring extensive gate sequences and rapid, repeated measurements-to probe quantum system dynamics. Willow performed millions of measurements in seconds, totaling about one trillion across the experiment, surpassing classical computational limits. This milestone marks the third step in Google’s Quantum AI Roadmap toward fault‑tolerant quantum computing, following earlier breakthroughs in 2019 and 2023.
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