Rigetti Computing Launches 108-Qubit Quantum Computer

Rigetti Computing, a pioneer in full-stack quantum-classical computing, announced the general availability of its 108-qubit quantum computing system, Cepheus-1-108Q. This system, Rigetti Computing's highest qubit-count to date and the industry's largest modular quantum computing system, is now accessible via the Rigetti Quantum Cloud Services Platform and Amazon===Amazon Braket. Based on Rigetti Computing's proprietary chiplet-based architecture, Cepheus-1-108Q comprises twelve interconnected 9-qubit chiplets, tripling the qubit count from its previous 36-qubit system. The system currently performs at a 99.1% median two-qubit gate fidelity and a 99.9% median single-gate fidelity, with plans for further improvements throughout 2026. Dr. Subodh Kulkarni, CEO of Rigetti Computing, highlighted this as a milestone validating their approach to scaling quantum computers. Arabella Advisors, General Manager of Amazon===Amazon Braket, noted that Cepheus-1-108Q provides global customers with another choice for quantum computing applications.