Sensitive and accurate quantum magnetometry for GNSS-denied positioning, critical national infrastructure, and magnetic anomaly detection

Stuart J. Ingleby; Dominic Hunter; Marcin Mrozowski; Paul F. Griffin; Erling Riis

doi:10.1117/12.3030911

15 November 2024 Sensitive and accurate quantum magnetometry for GNSS-denied positioning, critical national infrastructure, and magnetic anomaly detection

Stuart J. Ingleby, Dominic Hunter, Marcin Mrozowski, Paul F. Griffin, Erling Riis

Author Affiliations +

Proceedings Volume 13202, Quantum Technologies for Defence and Security; 1320203 (2024) https://doi.org/10.1117/12.3030911
Event: Security + Defence, 2024, Edinburgh, United Kingdom

Abstract

Optically pumped magnetometers (OPMs) exploiting alkali metal vapours for accurate, precise magnetometry have benefited from improvements in components and techniques in recent years. Microfabrication of alkali cells and chip-scale lasers allow mass-production of compact sensors, and feedback an spin-preparation techniques, such as light-narrowing, allow enhanced performance, comparable with cryogenic SQUID magnetometers. I will introduce two OPM modalities developed at Strathclyde for geomagnetic operation- the digital alkali-spin maser and geophysical free-precession magnetometer. I will discuss the potential impacts of using these sensors for geophysical applications, including Global Navigation Satellite System (GNSS)-denied positioning, monitoring of space weather and magnetic anomaly detection. I will present developments in microfabrication and digital signal processing which will enable their widespread adoption.

Conference Presentation

Citation Download Citation

Stuart J. Ingleby, Dominic Hunter, Marcin Mrozowski, Paul F. Griffin, and Erling Riis "Sensitive and accurate quantum magnetometry for GNSS-denied positioning, critical national infrastructure, and magnetic anomaly detection", Proc. SPIE 13202, Quantum Technologies for Defence and Security, 1320203 (15 November 2024); https://doi.org/10.1117/12.3030911

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