Quantum computing company Rigetti claims to have halved its two-qubit gate error rate on its 84-qubit Ankaa-3.

The company said it had also achieved its mid-year performance milestone of 99.5 percent median two-qubit gate fidelity on its chiplet-based 36-qubit system.

Founded in 2013 to commercialize quantum computing technologies, in late December 2024, California-based Rigetti launched its 84-qubit Ankaa-3 system, which the company says features an “extensive hardware redesign that enables superior performance.”

It includes a cryogenic hardware design to reduce the amount of metal at the refrigerator’s coldest stage, increasing efficiency and reducing the cost per qubit, and an improved qubit chip consisting of a new metal deposition method for qubit circuitry and an optimized circuit layout.

A month before launching the Ankaa-3, Rigetti announced it had raised $100 million through the sale of common stock, as part of its “at-the-market” equity offering program that began in March.

Meanwhile, the aforementioned 36-qubit system is set to be released on August 15, with Rigetti also planning to release a 100+ qubit chiplet-based system, which demonstrates the 99.5 percent median two-qubit gate fidelity rate before the end of 2025.

“We benefit from the many advantages of superconducting qubits, including gate speeds more than 1,000x faster than other modalities like ion trap and pure atoms, and scalability. By leveraging well-known techniques from the semiconductor industry, we’ve developed proprietary technology that we believe is critical to enable scaling to higher qubit count systems,” says Dr. Subodh Kulkarni, Rigetti CEO. “We look forward to sharing more updates when we release our operating results for the second quarter of 2025.”

In May 2025, the company posted total revenues of $1.5 million for Q1 2024, while operating loss for the quarter was $21.6m.