RGTI · Rigetti Computing, Inc.

Summary

Rigetti Computing announced general availability of its 108-qubit Cepheus-1-108Q quantum system via QCS platform and Amazon Braket, achieving 99.1% median two-qubit gate fidelity.

Key takeaways

• Cepheus-1-108Q is Rigetti's highest qubit-count system to date, comprising twelve 9-qubit chiplets.
• System delivers 99.1% median two-qubit gate fidelity at ~60 ns gate speed and 99.9% median single-qubit fidelity.
• Now generally available to customers via Rigetti QCS and Amazon Braket.
• Validates proprietary chiplet-based scaling architecture, tripling qubits from prior 36-qubit system.
• Plans to improve to 99.5% two-qubit fidelity later in 2026 and update roadmap.