The Willow processor is a 105-qubit superconducting quantum computing processor developed by Google Quantum AI and manufactured in Santa Barbara, California

On December 9, 2024, Google Quantum AI announced Willow in a Nature paper and company blogpost, and claiming two accomplishments: First, that Willow can reduce errors exponentially as the number of qubits is scaled, achieving below threshold quantum error correction. Second, that Willow completed a Random Circuit Sampling (RCS) benchmark task in 5 minutes that would take today's fastest supercomputers 10 septillion (1025) years