IonQ

IonQ is a US publicly listed quantum computing company and one of the firms named in the UK governments PS2bn quantum deployment commitment. Based in College Park, Maryland, IonQ develops trapped-ion quantum computers, which use individual atoms confined by electromagnetic fields as qubits, offering high gate fidelity and relatively long coherence times compared to competing approaches.

Founded in 2015 as a spinout from the University of Maryland and Duke University, IonQ went public via a SPAC merger in 2021, becoming the first publicly traded pure-play quantum computing company. It has partnerships with Amazon Web Services, Microsoft Azure, and Google Cloud, offering cloud-accessible quantum computing to researchers and commercial customers. IonQ has set public milestones for algorithmic qubit performance and reports regular progress against its roadmap.

IonQs inclusion in the UK quantum strategy reflects Britains assessment that trapped-ion technology represents one of the viable pathways to fault-tolerant quantum computing, alongside superconducting qubits (used by IBM and Google) and cold-atom approaches (used by Infleqtion). For UK organisations using quantum cloud services, IonQs cloud accessibility means practical experimentation is possible without capital equipment investment, which is why it features in deployment-focused government programmes rather than purely research ones.