Rigetti launches Cepheus-1-36Q, its first multi-chip system

Rigetti Computing/Ankaa and Cepheus QPUs

Rigetti made Cepheus-1-36Q, a 36-qubit system built from four chiplets, generally available on its cloud platform with 99.5% median two-qubit gate fidelity, halving the error rate of Ankaa-3. The multi-chip design represents Rigetti's route to larger machines.

• 36 qubits built from four chiplets; 99.5% two-qubit fidelity cuts Ankaa-3 error rate in half.
• Multi-chip architecture enables scaling to larger systems.