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Riverlane awarded contract by Rigetti Computing to deliver QEC Stack technology to the UK’s NQCC

Press release
Riverlane awarded contract by Rigetti Computing to deliver QEC Stack technology to the UK’s NQCC
Emilia Conlon
20 February, 2024

Riverlane, the global leader in quantum error correction technology, has been awarded a contract alongside Rigetti Computing, a pioneer in full stack quantum classical computing, to integrate elements of its Quantum Error Correction Stack into a new quantum computing testbed solution being built for the UK government. 

In the NQCC project, Riverlane plans to integrate Deltaflow.Control with Rigetti’s 24-qubit quantum computer based on the Rigetti’s fourth generation Ankaa™-class architecture to execute individual qubit control and readout. The work falls under the Small Business Research Initiative (SBRI) competition delivered by Innovate UK with funding from the NQCC.  

Riverlane's Quantum Error Correction Stack, named ‘Deltaflow’, creates error-free logical qubits from many unstable physical qubits enabling large-scale applications to be built.

Steve Brierley, Founder & CEO of Riverlane said: “We’re thrilled that Riverlane will be a control system provider in this important government initiative, giving us the opportunity to build the next generation of Deltaflow.Control using Rigetti’s quantum hardware system. We’re equally thrilled to work with them to use our leading decoder technology, Deltaflow.Decode, with their proposed 24-qubit quantum computer. 

Furthermore, Riverlane plans to provide its new ‘Aqueduct’ software for the testbed project. Aqueduct enables users to manage the many tools, interfaces and data outputs from quantum computer experiments via one simple interface.  

The aim of the competition is to deliver testbeds that accelerate the growth of user adoption in quantum computing and explore critical bottlenecks. Through the integration of its Quantum Error Correction Stack technology, Riverlane’s role in the project is to improve the qubit quality of the quantum computing testbed solution.  

The integrated system will be deployed at NQCC’s Harwell Campus, which is due to open in 2024, and will be made available to NQCC researchers for testing, benchmarking, and exploratory applications development. The work will be completed over a set period of 15 months and each project will be allocated between £2 million to £7 million. 

Dr. Subodh Kulkarni, CEO of Rigetti Computing, said: “Riverlane’s quantum error decoder will be an important component of our proposed 24-qubit Ankaa™ system. Rigetti and Riverlane are longtime collaborators, and being able to leverage their leading error control expertise continues to be a great asset as we continue to work towards building useful quantum computers.” 



About Riverlane 

Riverlane’s mission is to make quantum computing useful sooner, starting an era of human progress as significant as the industrial and digital revolutions. To achieve this, Riverlane is building the Quantum Error Correction Stack to comprehensively control qubits and correct the billions of real-time data errors that prevent today’s generation of quantum computers from achieving useful scale. Riverlane’s customers are governments, quantum computer hardware companies and world-leading research labs. Investors include leading venture capital funds Molten Ventures, Amadeus Capital Partners and Cambridge Innovation Capital; the UK’s national security investment fund (NSSIF); high-performance computing leader Altair; and the University of Cambridge. 


Deltaflow.Control is a critical part of Riverlane’s Quantum Error Correction Stack. It is a customisable solution for generating high accuracy, high speed pulse sequences to control qubits using affordable off-the-shelf hardware. In the SBRI competition, Riverlane will deliver the next generation of Deltaflow.Control, a control system that can serve up to ~100 SC (superconducting) and AMO (ion trap and neutral atom) qubits. The architecture of Deltaflow.Control is designed to support the future integration of Deltaflow.Decode. Riverlane has already installed previous generations of Deltaflow.Control in world-leading academic labs, including the University of Wisconsin, Duke University, Oak Ridge National Lab, and the University of Sydney. 


Aqueduct is a software platform that offers an easy-to-use, consistent interface for running quantum computing experiments and managing data across multiple users. It will provide the tools to enable automation and data management for scalable experiments, allowing for more efficient insight gathering through a centralised data storage, the facilitation of more demanding experimental activities and a reduction in the overall admin burden on users. 

About Rigetti 

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. 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 

Cautionary Language Concerning Forward Looking Statements 
Certain statements in this communication may be considered “forward-looking statements” within the meaning of the federal securities laws, including but not limited to, expectations with respect to the Company’s business and operations, including its expectations related to the Innovate UK SBRI award to deliver a 24-qubit quantum computer to the NQCC and NQCC researchers’ results in testing, expectations with respect to the reduction of error rates and path towards the Company’s goal of hitting 99% fidelity, expectations related to benchmarking and exploratory applications development using Rigetti’s system; and integration of elements of Riverlane’s Quantum Error Correction Stack and software platform, Aqueduct, and error correction results related to integration with Rigetti’s system. Forward-looking statements generally relate to future events and can be identified by terminology such as “commit,” “may,” “should,” “could,” “might,” “plan,” “possible,” “intend,” “strive,” “expect,” “intend,” “will,” “estimate,” “believe,” “predict,” “potential,” “pursue,” “aim,” “goal,” “outlook,” “anticipate,” “assume,” or “continue,” or the negatives of these terms or variations of them or similar terminology. Such forward-looking statements are subject to risks, uncertainties, and other factors which could cause actual results to differ materially from those expressed or implied by such forward-looking statements. These forward-looking statements are based upon estimates and assumptions that, while considered reasonable by Rigetti and its management, are inherently uncertain. Factors that may cause actual results to differ materially from current expectations include, but are not limited to: Rigetti’s ability to achieve milestones, technological advancements, including with respect to its roadmap, help unlock quantum computing, and develop practical applications; the ability of Rigetti to complete ongoing negotiations with government contractors successfully and in a timely manner; the potential of quantum computing; the ability of Rigetti to obtain government contracts and the availability of government funding; the ability of Rigetti to expand its QCS business; the success of Rigetti’s partnerships and collaborations; Rigetti’s ability to accelerate its development of multiple generations of quantum processors; the outcome of any legal proceedings that may be instituted against Rigetti or others; the ability to continue to meet stock exchange listing standards; costs related to operating as a public company; changes in applicable laws or regulations; the possibility that Rigetti may be adversely affected by other economic, business, or competitive factors; Rigetti’s estimates of expenses and profitability; the evolution of the markets in which Rigetti competes; the ability of Rigetti to execute on its technology roadmap; the ability of Rigetti to implement its strategic initiatives, expansion plans and continue to innovate its existing services; disruptions in banking systems, increased costs, international trade relations, political turmoil, natural catastrophes, warfare (such as the ongoing military conflict between Russia and Ukraine and related sanctions and the state of war between Israel and Hamas and related threat of a larger regional conflict), and terrorist attacks; and other risks and uncertainties set forth in the section entitled “Risk Factors” and “Cautionary Note Regarding Forward-Looking Statements” in the Company’s Annual Report on Form 10-K for the year ended December 31, 2022 and Quarterly Reports on Form 10-Q for the quarters ended March 31, 2023, June 30, 2023 and September 30, 2023, and other documents filed by the Company from time to time with the SEC. These filings identify and address other important risks and uncertainties that could cause actual events and results to differ materially from those contained in the forward-looking statements. Forward-looking statements speak only as of the date they are made. Readers are cautioned not to put undue reliance on forward-looking statements, and the Company assumes no obligation and does not intend to update or revise these forward-looking statements other than as required by applicable law. The Company does not give any assurance that it will achieve its expectations. 

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