MAG-V : Enabling Volume Quantum Magnetometer Applications through Component Optimisation & System Miniaturisation

A new type of quantum sensor, small enough to be held in one hand, will detect hidden cracks and flaws inside metal and composite materials without needing bulky magnetic shielding. Today, finding microscopic defects in critical components—such as aircraft wings, nuclear reactor pipes, or battery welds—often requires dismantling the part or using X-rays that struggle with thick or layered materials. Existing quantum magnetometers are too large and sensitive to stray magnetic fields to work outside specialised labs. The MagV project shrinks the sensor’s core components, including a custom laser and a vapour cell, so it can operate in ordinary factory or field conditions. If successful, the device will let engineers scan structures for early-stage damage without stopping production or cutting parts open. This could reduce maintenance costs, extend the life of infrastructure, and catch failures before they happen. The project builds on fundamental quantum optics research and pushes it toward a commercial product, with industry partners already lined up to test the sensor on real-world inspection challenges.