Oxford Quantum Circuits
Overview
Proprietary Coaxmon architecture placing qubit control circuitry in a separate layer, reducing on-chip interference and improving scalability. Developing Dimon dual-rail qubit architecture for speed, scale, and quality.
Key Milestones
- 2017: Founded by Dr. Peter Leek from University of Oxford
- 2022: First European quantum computer available on Amazon Braket
- 2023: Deployed quantum systems in London, Tokyo, New York, and Spain
- 2024: Launched UK's first quantum error correction testbed
- 2025: Launched Dimon dual-rail qubit architecture
- 2025: Sir Jeremy Fleming (former GCHQ Director) appointed to board
- 2025: CEO Gerald Mullally appointed (July 2025)
- 2025: First commercial data centre integration
- 2026: Quantum computer deployed in New York City (Wall Street expansion)
Technology Approach
OQC uses a proprietary Coaxmon architecture — a variation on superconducting qubits where control circuitry is placed in a separate 3D layer above the qubit plane. This reduces interference between qubits and control lines, a key bottleneck in scaling superconducting quantum processors.
The newer Dimon dual-rail architecture aims to combine the speed of superconducting with improved error resilience, bridging the gap toward fault tolerance.
Global Presence
OQC has deployed quantum systems across four continents — London, Tokyo, New York, and Spain — and launched the UK’s first quantum error correction testbed. The company is one of only a handful of quantum hardware makers operating commercially outside the US.
Competitive Position
Strengths: Unique architectural approach (Coaxmon), global deployment footprint, strong UK government and defence connections.
Challenges: Competing against IBM, Google, and Rigetti with significantly less funding. Superconducting is a crowded modality.
Under CEO Gerald Mullally (appointed July 2025), OQC has expanded aggressively into the US market with a NYC/Wall Street deployment and achieved the UK’s first quantum error correction testbed. Sir Jeremy Fleming (former GCHQ Director) on the board strengthens defence and security credentials. Systems now operate in London, Tokyo, NYC, and Spain.