Quantum Computing Roadmaps

- The "Quantum Computing Roadmaps" site tracks the publicly announced development plans (roadmaps) of major quantum computing hardware companies — including IBM, Google, IonQ, Rigetti, Quantinuum, and others. - Quantum computing is an emerging technology that uses quantum-mechanical phenomena (superposition, entanglement) to solve certain problems far faster than classical computers. The field is still in its early stages; no one has yet built a fully error-corrected, general-purpose quantum computer. - The tracker is useful because quantum computing roadmaps are highly competitive and constantly shifting. Each company is racing to hit milestones like higher qubit counts, lower error rates, and "quantum advantage" (proving a quantum computer can do something useful that a classical computer cannot). - Prior context: In 2023–2024, several companies missed their own targets (e.g., IBM's 2023 goal for a 1,121-qubit chip), and others pivoted toward error correction and modular architectures instead of raw qubit count. The tracker helps decode the hype by comparing promises against actual delivery dates.