Rigetti Computing has announced that its Ankaa-2 processor is now publicly available to their customers on Rigetti’s Quantum Cloud Services (QCS) platform. This uses a fourth generation architecture and includes numerous improvements of the previous generations including tunable couplers, a square lattice topology, and other improvements in fabrication and electronics to provide more qubits and higher levels of qubit quality. A key area of focus was in improving the two qubit gate fidelity which has now reached 97.5% on the Ankaa-2 versus about 95.1% on the predecessor Aspen-M-3 device (see here for details on these metrics). A press release from Rigetti announcing the availability of this processor has been posted on the company’s website here.
January 5, 2024
