Rigetti Demonstrates Multi Chip Quantum Computer With Halved Two Qubit

July 16, 2025 07:30 ET | Source: Rigetti Computing, Inc. Rigetti Computing, Inc. BERKELEY, Calif., July 16, 2025 (GLOBE NEWSWIRE) -- Rigetti Computing, Inc. (Nasdaq: RGTI) (“Rigetti” or the “Company”), a pioneer in full-stack quantum-classical computing, today announced that it has achieved its mid-year performance milestone of 99.5% median two-qubit gate* fidelity on its modular 36-qubit system, a... Composed of four 9-qubit chips (“chiplets”) tiled together, the 36-qubit system is based on Rigetti’s proprietary modular chip technology and unlocks the Company’s path to building a 100+ qubit chiplet-based system. Rigetti plans to launch its 36-qubit system on August 15, and remains on track to release its 100+ qubit chiplet-based system at 99.5% median two-qubit gate fidelity 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.” *Rigetti implemented CZ gates, which are a commonly used two-qubit gate for executing quantum circuits and have equivalent computational power to iSWAP gates. About RigettiRigetti is a pioneer in full-stack quantum computing.

The Company has operated quantum computers over the cloud since 2017 and serves global enterprise, government, and research clients through its Rigetti Quantum Cloud Services platform. In 2021, Rigetti began selling on-premises quantum computing systems with qubit counts between 24 and 84 qubits, supporting national laboratories and quantum computing centers. Rigetti’s 9-qubit Novera™ QPU was introduced in 2023 supporting a broader R&D community with a high-performance, on-premises QPU designed to plug into a customer’s existing cryogenic and control systems. The Company’s proprietary quantum-classical infrastructure provides high-performance integration with public and private clouds for practical quantum computing. Rigetti has developed the industry’s first multi-chip quantum processor for scalable quantum computing systems. The Company designs and manufactures its chips in-house at Fab-1, the industry’s first dedicated and integrated quantum device manufacturing facility.

Learn more at www.rigetti.com. Rigetti announced that it has achieved its mid-year performance milestone of 99.5% median two-qubit gate fidelity on its modular 36-qubit system, a 2x reduction in median two-qubit gate error rate from Rigetti’s previous best... Rigetti Computing, Inc. (Nasdaq: RGTI) has achieved its mid-year performance milestone of 99.5% median two-qubit gate fidelity on its modular 36-qubit system. This represents a 2x reduction in median two-qubit gate error rate compared to Rigetti’s previous results on its 84-qubit single-chip Ankaa™-3 system. The 36-qubit system is composed of four 9-qubit chiplets tiled together, utilizing Rigetti’s proprietary modular chip technology.

The modular chip technology is intended to support Rigetti’s path to building higher qubit count systems. Rigetti implements CZ gates, which are computationally equivalent to iSWAP gates, for executing quantum circuits. The company aims to leverage techniques from the semiconductor industry to enable the scaling of its superconducting qubit systems. Rigetti operates quantum computers over the cloud and provides on-premises quantum computing systems, designing and manufacturing its chips at Fab-1. The achievement of this gate fidelity milestone on the modular system is positioned as a step towards Rigetti’s goal of developing larger qubit count systems. Rigetti plans to launch its 36-qubit system on August 15, 2025.

The company also remains on track to release its 100+ qubit chiplet-based system, targeting 99.5% median two-qubit gate fidelity, before the end of 2025. This development contributes to the efforts of scaling superconducting qubit architectures. BERKELEY, Calif., July 16, 2025 -- Rigetti Computing, Inc. (Nasdaq: RGTI) (“Rigetti” or the “Company”), a pioneer in full-stack quantum-classical computing, today announced that it has achieved its mid-year performance milestone of 99.5% median two-qubit gate* fidelity on its modular 36-qubit system, a... Composed of four 9-qubit chips (“chiplets”) tiled together, the 36-qubit system is based on Rigetti’s proprietary modular chip technology and unlocks the Company’s path to building a 100+ qubit chiplet-based system. Rigetti plans to launch its 36-qubit system on August 15, and remains on track to release its 100+ qubit chiplet-based system at 99.5% median two-qubit gate fidelity 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.” *Rigetti implemented CZ gates, which are a commonly used two-qubit gate for executing quantum circuits and have equivalent computational power to iSWAP gates. Rigetti is a pioneer in full-stack quantum computing.

The Company has operated quantum computers over the cloud since 2017 and serves global enterprise, government, and research clients through its Rigetti Quantum Cloud Services platform. In 2021, Rigetti began selling on-premises quantum computing systems with qubit counts between 24 and 84 qubits, supporting national laboratories and quantum computing centers. Rigetti’s 9-qubit Novera™ QPU was introduced in 2023 supporting a broader R&D community with a high-performance, on-premises QPU designed to plug into a customer’s existing cryogenic and control systems. The Company’s proprietary quantum-classical infrastructure provides high-performance integration with public and private clouds for practical quantum computing. Rigetti has developed the industry’s first multi-chip quantum processor for scalable quantum computing systems. The Company designs and manufactures its chips in-house at Fab-1, the industry’s first dedicated and integrated quantum device manufacturing facility.

Learn more at www.rigetti.com. Includes in-depth technical articles, Technical Papers, videos, slides, product announcements and more. Written by Leo Miller, MarketBeat Contributor for MarketBeat-> Quantum computing stock Rigetti Computing (NASDAQ: RGTI) had a massive day on July 16. Shares rose 30% after the firm announced, “Rigetti Demonstrates Industry’s Largest Multi-Chip Quantum Computer; Halves Two-Qubit Gate Error Rate.” So, what does this actually mean, and why should quantum investors care deeply about this announcement?

In quantum computing, a big debate is whether to use a monolithic or multi-chip approach. A monolithic approach involves creating a massive single-chip quantum computer. The multi-chip approach uses several smaller chips. These chips connect through a process called tiling. Multi-chip, modular, and chiplet are different terms used to describe this approach. As the quantum computing industry grows, many firms are moving from a monolithic approach to a multi-chip one.

Notably, this includes Rigetti itself, as well as International Business Machines (NYSE: IBM). After years of pursuing the monolithic approach, Rigetti now believes that the modular approach is the “right way to go in the long term." According to researchers at Northwestern University, “practical implementations of quantum... The Northwestern researchers suggest that scaling a monolithic chip to millions of qubits is “very expensive or entirely unrealistic by current standards." They argue that large-scale quantum systems will need to adopt a multi-chip/modular... New York — Dec. 26, 2025, 11:13 p.m. ET — Rigetti Computing, Inc.

(NASDAQ: RGTI) closed the post‑Christmas session sharply lower in a market that was otherwise drifting near record levels in thin, year‑end trading. Reuters+1 RGTI ended Friday around $22.38, down roughly 8.6% on the day after trading between about $24.51 and $22.34, with volume above 28 million shares—a big number for a stock that has become one of... MarketBeat This article breaks down the latest Rigetti‑specific developments, the current analyst landscape and forecasts, and—because U.S. exchanges are closed right now—what investors should keep in mind heading into the next regular session on Monday, Dec.

29 (9:30 a.m. to 4:00 p.m. ET). New York Stock Exchange+1 Friday’s drop came during a low‑volume, post‑holiday session where major indexes barely moved. The S&P 500 slipped to 6,929.94, the Dow dipped to 48,710.97, and the Nasdaq eased to 23,593.10, according to AP—typical “between Christmas and New Year’s” tape action.

AP News+1 In that kind of market, high‑beta, story‑driven stocks can swing harder than the averages, especially when the shareholder base is dominated by shorter‑horizon traders and options activity. That dynamic has been a defining feature of “Quantum 4” names—including Rigetti—throughout 2025. Reuters+1

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