The chip completed a complex calculation in five minutes that would take a supercomputer 10 septillion years, according to the report.
Willow also reduced error rates as more qubits were added, a key advance toward fault-tolerant quantum computing and wider real-world use.
The report places Alphabet alongside Nvidia and Microsoft in a fast-growing market McKinsey estimates could reach $100bn by 2035, with recent Quantum Echoes work extending momentum.
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Breakthrough in Quantum Computing: Google’s Willow Processor Runs Complex Simulations 13,000 Times Faster Than Classical Supercomputers
Overview
In late 2025, Google Quantum AI achieved a major breakthrough with its Quantum Echoes experiment, which was formally validated by a Nature publication in April 2026 as the world's first verifiable quantum advantage. Using the advanced Willow processor with 105 superconducting qubits and robust error correction, Quantum Echoes completed a complex simulation task in just 2.1 hours—a feat that would take the Frontier supercomputer over 3 years, representing a 13,000-fold speed increase. This experiment produces verifiable, reproducible results relevant to real-world applications like drug discovery and materials science. It also sparked industry partnerships and highlighted the urgent need for post-quantum cryptography to secure future digital systems.