Quantum Sensors: Redefining Precision in Gravity, Magnetism, and Inertia
In short: How can measuring the subtle spin of atoms or the pull of gravity revolutionize our understanding of physical forces? Quantum sensors, advanced by institutions like NPL, are moving beyond classical limits, promising unprecedented accuracy for everything from structural inspection to fundamental physics research.
Quantum sensors are enabling highly precise measurements of physical quantities such as gravity, inertial forces, and magnetic fields. Techniques like atomic magnetometry allow researchers to monitor the spin of atoms when exposed to external magnetic fields. Furthermore, atom interferometry is being utilized to measure not only gravity but also linear accelerations and rotations with enhanced capability compared to older methods.
The National Physical Laboratory (NPL) is at the forefront of this development. Their research includes work on gravity gradiometers and absolute gravimeters that utilize a double rubidium atomic fountain, offering distinct advantages over conventional measurement devices. These advancements are crucial for developing portable magnetometers, which can be used for non-destructive imaging to detect structural defects.
A key figure in this field is Prof Jan-Theodoor (JT) Janssen, Chief Scientist at NPL. Since joining NPL in 1998, his work has focused on applying quantum technologies to metrology. He co-directs the Quantum Metrology Institute (QMI), which serves as a hub for NPL's quantum science research, providing necessary infrastructure for industry and academia to validate and commercialize new quantum technologies.
JT Janssen's expertise spans solid-state physics applied to metrology. Beyond his role at NPL, he launched the National Graphene Metrology Centre (NGMC) to establish metrology and standardization for the emerging graphene sector. His professional standing is underscored by his roles as the UK representative on EURAMET and a member of its Board of Directors.
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- Summary by Intellect · source: The future of measurement with quantum sensors - with The National Physical Laboratory
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