January 06, 2026 -- Infleqtion (the “Company”), a global leader in neutral atom-based quantum technology, announced the appointment of Colin Sullivan MBE as Managing Director of Infleqtion UK effective immediately. In this role, he will spearhead Infleqtion’s UK operations, advancing its mission to transform quantum research into deployable capabilities for defence, security, and commercial sectors. Sullivan is joining Infleqtion after the company announced in September that it plans to go public through a business combination with Churchill Capital Corp X (“Churchill X”), a special purpose acquisition company.

Sullivan currently serves as the UK National Air and Space Delegate to the NATO Industry Advisory Group (NIAG), providing industrial insight, advice and guidance on strategic priorities for allied defence capabilities. He has held senior Royal Air Force appointments as Chief Operations Officer and Deputy Force Commander, as well as Senior Military Advisor to the UK’s defence research programme. Post-military service, Sullivan has held senior leadership appointments at Lockheed Martin UK and Boeing Defence UK. Most recently, Sullivan served as UK Chief Strategy Officer and Head of Government Affairs at HENSOLDT UK, leading UK business growth strategies, government and industry engagements.

This appointment builds on Infleqtion’s expanding footprint across the UK’s national quantum ecosystem. Infleqtion UK partners with government and industry stakeholders to deliver deployable quantum computing and quantum sensing capabilities. Infleqtion recently announced it was selected to accelerate performance of its SQALE neutral-atom platform at the National Quantum Computing Centre (NQCC), targeting a 10x–100x increase in gate execution rate in collaboration with leading UK institutions. In addition, Infleqtion has conducted UK-based field testing of its Tiqker optical-clock technology, including Royal Navy sea trials to evaluate resilient, GPS-free navigation on an autonomous maritime platform.

“The UK is building one of the world’s most ambitious national quantum programmes, and Infleqtion is committed to being a long-term partner to that mission,” said Matt Kinsella, CEO of Infleqtion. “With Colin leading Infleqtion UK, we will deepen our engagement across government, academia, and industry and continue to advance world-leading quantum computing and quantum sensing capabilities designed for operational deployment in the UK, and globally.”

“Quantum technology is critical to the future of defence, security and national resilience,” said Sullivan. “The UK is a global centre of excellence in quantum, and Infleqtion is committed to building enduring capability here, bridging the gap between technology and operational deployment. I’m delighted to have been asked to lead the expansion of the Infleqtion UK business and accelerate the transition to quantum computing and quantum sensing solutions.”

Sullivan holds a master’s degree in international relations (Defence Studies) from King’s College London and is a graduate of the Royal College of Defence Studies.

Infleqtion’s product portfolio includes quantum computers, quantum optical clocks, RF receivers, and inertial sensors, all engineered for real-world deployment and optimized with Infleqtion’s proprietary software. These systems are already in use by the U.S. Department of War, NASA, and the U.K. government, and also form elements of multiple collaborations with NVIDIA.