Rigetti Computing announces public availability of Ankaa-2 system

Rigetti Computing announced that its 84-qubit Ankaa-2 quantum system was made publicly available to all of its customers via Rigetti’s Quantum Cloud Services on December 20, 2023. The Ankaa-2 system is based on Rigetti’s fourth generation chip architecture that features tunable couplers and a square lattice, enabling high fidelity 2-qubit operations compared to the Company’s previous systems. Ankaa-2 is also the Company’s highest qubit count quantum processing unit available to the public. Following the internal deployment of Ankaa-1, the Company made iterative improvements through internal R&D to support enhancements to Ankaa-2. As a result, Ankaa-2 achieved a 2% median 2-qubit gate error rate – less than half the error rate of the Company’s previous systems. These fidelity improvements can be attributed to a variety of technology updates to the Ankaa-2 system: Implementation of a new chip fabrication process, leading to qubits with fewer atomic defects that would otherwise reduce quantum coherence times; Incorporation of new superconducting PCB technology that improves thermal performance; Electronics improvements that generate control signals with less noise