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Riverlane: UK Consortium Develops New Hardware Abstraction Layer to Facilitate Collaboration Across the Quantum Computing IndustryA consortium led by Cambridge-based quantum computing software company Riverlane and the National Physical Laboratory (NPL) has developed an open-source hardware abstraction layer (HAL) that makes software portable across different quantum computing hardware platforms. The HAL is designed to be portable across four leading qubit technologies: superconducting qubits, trapped-ion qubits, photonic systems and silicon-based qubits. It will allow high-level quantum computer users, such as application developers, platform and system software engineers, and cross-platform software architects, to write programs for quantum computers portable to these four qubit technologies while maximising performance. Devising the HAL required collaboration between a large number of players in the UK quantum ecosystem, which were brought together by a £7.6M project funded by the UK government's Industrial Challenge Strategy Fund. Alongside Riverlane and NPL, the consortium includes the UK's quantum hardware companies, SeeQC, Hitachi Europe, Universal Quantum (News - Alert), Duality Quantum Photonics, Oxford Ionics, and Oxford Quantum Circuits, as well as UK-based chip designer, ARM. The aim is for quantum computer users to be able to implement applications that require the fastest classical/quantum interaction. Previous high-level HALs do not support these types of applications, particularly not across very different qubit types. The consortium's new, multi-level HAL goes deep into the quantum computing stack, allowing users to take advantage of advanced hardware capabilities for improved performance. This means a developer can focus on the algorithm, rather than the hardware specific implementation, and that the algorithm is portable across different quantum technologies. In the future, the HAL will also provide support for advanced features, such as compile optimisations, measurement-based control, and error correction. The HAL will form the backbone of Riverlane's highly innovative quantum operating system, Deltaflow.OS. Dr Leonie Mueck, Chief Product Officer of Riverlane, said: "There are many different evolving systems in the quantum ecosystem and we need an interface that is independent of the hardware to make programs portable. We are therefore delighted to have reached this important milestone. Our HAL effectively allows programmers to 'write once, run anywhere', ensuring the widest possible use of our consortium's technologies and opening up the ecosystem to new players, generating additional commercial opportunities." Dr Ivan Rungger, Senior Research Scientist of the National Physical Laboratory (NPL), said: "This is the first time that such a diverse group of hardware and software companies have come together to build an open HAL specification and release it publicly. Our aim is to reduce the barrier for non-experts to access quantum technology and to accelerate the pathway to quantum advantage." This first specification of the HAL is 'version 0' and is freely accessible on Github. The consortium is seeking feedback from the quantum community, with the eventual aim of including the concepts into an international standard on which the community can build. Abhishek Agarwal, Research Scientist of the National Physical Laboratory (NPL), continued: "We encourage quantum computer users to try out the HAL. Anyone can implement the HAL and try out their algorithms on qubit emulators. We welcome input to improve the specification further." The HAL represents an important next step in building a quantum ecosystem that is open to everyone. In this dynamic industry, APIs, backends and interfaces are most effective when they are defined with both hardware companies and users in mind to benefit everyone in the community. This is the philosophy that the HAL is based on. This breakthrough will also help accelerate the commercialisation of the UK quantum technology sector. ENDS Notes for editors About Riverlane Riverlane builds ground-breaking algorithms and software to unleash the predictive power of quantum computing. With a multidisciplinary team of world-leading researchers, our mission is to make quantum computers useful sooner. Backed by leading venture-capital funds and the University of Cambridge, Riverlane collaborates with leading quantum hardware providers, as well as visionary chemical, pharmaceutical and materials companies. For more information, visit https://riverlane.com. National Physical Laboratory (NPL) NPL is the UK's National Metrology Institute, providing the measurement capability that underpins the UK's prosperity and quality of life. From new antibiotics to tackle resistance and more effective cancer treatments, to secure quantum communications and superfast 5G, technological advances must be built on a foundation of reliable measurement to succeed. Building on over a century's worth of expertise, our science, engineering and technology provides this foundation. We save lives, protect the environment and enable citizens to feel safe and secure, as well as support international trade and commercial innovation. As a national laboratory, our advice is always impartial and independent, meaning consumers, investors, policymakers and entrepreneurs can always rely on the work we do. Based in Teddington, south-west London, NPL employs over 600 scientists. NPL also has regional bases across the UK, including at the University of Surrey, the University of Strathclyde, the University of Cambridge and the University of Huddersfield's 3M (News - Alert) Buckley Innovation Centre.
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