Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe

QI: Fachverband Quanteninformation

QI 6: Quantum Metrology and Sensing (joint session QI/Q)

QI 6.2: Vortrag

Montag, 10. März 2025, 17:30–17:45, HS VIII

A comprehensive study of various optically pumped magnetometer schemes — •Marco Decker^{1, 2}, Rafael Rothganger De Paiva^{1, 3}, and René Reimann¹ — ¹Quantum Research Center, Technology Innovation Institute, Abu Dhabi, UAE — ²Department of Physics and Research center OPTIMAS, RPTU Kaiserslautern-Landau — ³Universidade Federal do ABC, Santo Andre, Sao Paulo, Brazil

Highly precise and accurate magnetic field sensing has real-world applications in non-destructive testing [1], biomedical imaging [2], and positioning and navigation [3]. Optically pumped magnetometers (OPMs) have proven to be a highly suitable choice to meet the requirements of these applications [4]. In this work, we present a comprehensive study of various OPM schemes and evaluate their feasibility for multiple use cases.

Comparing measurement schemes from published works is challenging due to varying gas mixtures, laser setups, and shielding conditions. We systematically evaluate the free induction decay (FID), nonlinear magneto-optical rotation (NMOR), Bell-Bloom, and other setup types, tested with Cs-133 vapor for various buffer gases and coatings. After comparing sensitivity, bandwidth, and dynamic range, we assess the suitability of these schemes for different deployment scenarios.

[1] S. Youssef, Journal of Nondestructive Testing 21, 19390 (2016); [2] P. K. Mandal, Front. Comput. Neurosci. 12 (2018); [3] A. J. Canciani, AFIT, Dissertation, https://scholar.afit.edu/etd/251 (2016); [4] D. Budker and M. Romalis, Nature Physics 3, 227-234 (2007)

Keywords: Optically pumped magnetometers; Magnetism; Magnetic field sensing; Sensors and application