Rigetti Computing Delays General Availability of 108-Qubit Quantum System Cepheus-1-108Q to Q1 2026
Rigetti Computing has postponed the general availability of its 108-qubit quantum system, Cepheus™-1-108Q, to the end of Q1 2026 due to challenges with tunable couplers that require further optimization. The system, which boasts a median two-qubit gate fidelity of 99% and aims for 99.5%, will be the largest modular quantum computing system in the industry, built from twelve 9-qubit chiplets. Rigetti continues to provide quantum computing services through its Rigetti Quantum Cloud Services platform for various clients.
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Rigetti Computing, Inc. has revised its roadmap, delaying the general availability of its 108-qubit quantum computing system, Cepheus™-1-108Q, to the end of Q1 2026. The delay is attributed to complexities with tunable couplers, prompting additional iterations for system optimization.
Rigetti reported a median two-qubit gate fidelity of 99% for the 108-qubit system, aiming for 99.5%. Cepheus-1-108Q, based on twelve 9-qubit chiplets and utilizing a modular chip architecture, will be Rigetti's highest qubit count system and is positioned as the largest modular quantum computing system in the industry. The company operates quantum computers via its Rigetti Quantum Cloud Services platform, supporting enterprise, government, and research clients.
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