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Quantum Circuits develops full-stack quantum computing systems based on superconducting devices with a modular, scalable architecture. Founded by Yale scientists, the company pioneered dual-rail cavity qubits with built-in hardware error detection, requiring 10x fewer physical qubits per logical qubit for fault-tolerant quantum computing. The company was acquired by D-Wave Quantum in January 2026 for $550 million.

Company Founded in 2015

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