Infleqtion Delivers the UK’s Only Operational 100-Qubit Quantum Computing System at the National Quantum Computing Centre
Infleqtion, a global leader in quantum computing and quantum sensing technologies based on neutral-atom architecture, has reached a significant milestone by delivering the United Kingdom’s only operational 100-physical-qubit quantum computing system. The system has been deployed at the National Quantum Computing Centre (NQCC) as part of the country’s broader effort to accelerate the development of advanced quantum technologies.
The achievement was made possible through Infleqtion’s Sqale quantum computing platform, which was installed and operationalized at the NQCC in December 2025. This milestone represents a key objective within the UK’s national quantum strategy, providing researchers, engineers, and industry partners with access to one of the most advanced quantum computing systems currently available in an operational research environment.
The installation of a 100-physical-qubit system marks a significant transition for the UK quantum ecosystem, moving beyond theoretical research and small laboratory prototypes toward practical experimentation with larger-scale quantum systems. With this system now in place, researchers will have the opportunity to explore complex algorithms, develop improved error-correction methods, and investigate real-world applications that could benefit from quantum computing capabilities.
Strengthening the UK’s Quantum Technology Leadership
Government leaders and researchers have emphasized the importance of this milestone for the UK’s broader technological ambitions. According to Patrick Vallance, Minister of State for Science, Research and Innovation, the deployment represents a major step forward for the country’s quantum sector.
He highlighted that advancements like this help transition quantum computing from experimental research toward tangible real-world applications. Quantum computers have the potential to address challenges that are currently beyond the capabilities of classical computing systems, particularly in fields such as materials science, pharmaceutical discovery, energy optimization, and complex logistics.
The UK has invested heavily in quantum research and innovation over the past decade, aiming to position itself as a global leader in this transformative technology. Initiatives like the NQCC’s Quantum Computing Testbed provide the infrastructure necessary for researchers and industry collaborators to experiment with cutting-edge hardware and develop the next generation of quantum-enabled solutions.
The deployment of Infleqtion’s Sqale system is therefore not only a technological milestone but also an important step toward establishing the UK as a global hub for quantum innovation.
A Platform Designed for Scalable Quantum Research
Infleqtion’s Sqale platform is based on neutral-atom quantum computing architecture, a technology that uses arrays of individually controlled atoms to represent quantum bits, or qubits. Neutral-atom systems are widely considered one of the most promising approaches for building scalable quantum computers due to their flexibility, stability, and ability to support large numbers of qubits.
Unlike traditional computers, which rely on binary bits that represent either 0 or 1, quantum computers operate using qubits that can exist in multiple states simultaneously through quantum superposition. This allows quantum systems to perform certain calculations exponentially faster than classical computers.
With 100 physical qubits available on the Sqale platform, researchers can begin exploring more advanced computational tasks that were previously difficult or impossible to test on smaller systems. This scale enables experiments involving more complex algorithms and provides a testbed for evaluating new methods for improving reliability and performance.
The system is also capable of supporting research into quantum error correction, a critical requirement for building reliable large-scale quantum computers. Because quantum states are extremely sensitive to environmental disturbances, error-correction techniques are necessary to stabilize computations and make quantum systems practical for real-world use.
Supporting the NQCC Quantum Computing Testbed Initiative
The deployment of the Sqale platform is a key component of the NQCC’s Quantum Computing Testbed Initiative, which aims to create a collaborative environment where researchers can evaluate multiple quantum hardware technologies.
Through this initiative, scientists and engineers will be able to benchmark system performance, test emerging quantum algorithms, and explore how neutral-atom quantum systems can scale to even larger sizes in the future.
According to Michael Cuthbert, Director of the NQCC, having a system of this scale available to the UK research community represents a major step forward.
He explained that access to a 100-qubit operational platform allows researchers to move beyond small-scale demonstrations and begin understanding the practical challenges associated with operating and scaling quantum computers. This includes studying system stability, optimizing algorithms for real hardware, and developing the expertise required to build the quantum workforce of the future.
The testbed initiative is also expected to support the development of the UK’s quantum supply chain by enabling collaboration between universities, startups, technology companies, and government institutions.
Roadmap Toward Logical Qubits and Fault-Tolerant Systems
Infleqtion’s milestone is part of a broader roadmap aimed at building increasingly powerful quantum computing systems. While physical qubits form the foundation of quantum hardware, practical quantum computing ultimately requires logical qubits, which are stable and error-corrected units capable of performing reliable computations.
Because quantum systems are inherently fragile, it can take anywhere from 10 to more than 1,000 physical qubits to create a single logical qubit depending on the quality of the hardware and the effectiveness of the error-correction approach.
Infleqtion’s systems have demonstrated a two-qubit gate fidelity of 99.73%, which is considered industry-leading performance. Higher fidelity means that quantum operations are less prone to errors, reducing the number of physical qubits required to build a reliable logical qubit.
The company’s roadmap includes plans to exceed 30 logical qubits by 2026 and surpass 100 logical qubits by 2028, milestones that would represent major progress toward fully fault-tolerant quantum computing systems.
Neutral-Atom Technology Moving Beyond the Laboratory
One of the defining characteristics of Infleqtion’s approach is its ability to translate neutral-atom research into practical systems that can operate outside of laboratory environments.
While many quantum computing technologies remain confined to academic experiments, Infleqtion has demonstrated neutral-atom systems in a range of real-world scenarios. These include pioneering quantum flight trials designed to test quantum technologies under operational conditions.
The company has also demonstrated the first materials science application running on logical qubits, showcasing the potential for quantum computing to accelerate discoveries in advanced materials and chemistry.
Additional milestones include the deployment of a quantum optical atomic clock on an autonomous underwater vehicle and the creation of the UK’s largest neutral-atom array. Infleqtion has also collaborated on research aimed at deploying a quantum gravity sensor in space, highlighting the versatility of neutral-atom technologies across multiple scientific domains.
Building the Future of Quantum Technology
The delivery of a 100-qubit operational system at the NQCC represents a defining moment not only for Infleqtion but also for the UK’s broader quantum ambitions.
According to Colin Sullivan, Managing Director of Infleqtion UK, achieving this milestone reflects years of research, collaboration, and technological development aimed at building sovereign quantum capabilities.
The partnership between Infleqtion and the NQCC is expected to continue expanding as researchers explore new applications, refine hardware performance, and develop the technologies needed for the next generation of quantum systems.
As quantum computing moves closer to practical deployment, platforms like Sqale will play a crucial role in bridging the gap between experimental research and real-world applications. By enabling collaboration between academia, industry, and government institutions, the system provides a foundation for the UK to remain at the forefront of one of the most transformative technologies of the 21st century.