Rigetti Computing, Inc. , a pioneer in full-stack quantum-classical computing, announced today the public launch of its 84-qubit Ankaa-3 system. Ankaa-3 is Rigetti’s newest flagship quantum computer featuring an extensive hardware redesign that enables superior performance. Rigetti also celebrates major two-qubit gate fidelity milestones with Ankaa-3: successfully halving error rates in 2024 to achieve a median 99.0% iSWAP gate fidelity, as well as demonstrating 99.5% median fidelity fSim gates.

Quantinuum, the world’s largest and leading integrated quantum computing company, unveiled its roadmap to universal, fully fault-tolerant quantum computing by 2030. The roadmap materially accelerates the path to commercial quantum computing systems with the potential to unlock a trillion-dollar market and enable AI to help solve some of the world’s most pressing problems. In parallel, Quantinuum in partnership with Microsoft announced a series of milestones and integrations.

Fujitsu Limited today announced the world’s first demonstration of a complete universal quantum gate set for diamond spin qubits with an error probability below 0.1%, achieving a fidelity among the highest reported over all quantum hardware technologies. This collaboration with QuTech, a leading quantum technology research institute of Delft University of Technology (TU Delft), marks an important step for the diamond spin method towards carrying out quantum error correction and realizing practical quantum computing. The findings were published in Physical Review Applied on March 21, 2025.

Nuclear physicists at the University of Washington developed a new framework to systematically analyze the interplay of these approximations. They showed that the impact of such approximations can be minimized by tuning simulation parameters. Such optimizations are demonstrated in the context of spin models sharing key features with nuclear interactions.