Document Type

Journal Article


Hindawi Publishing Corporation


Faculty of Health, Engineering and Science


Electron Science Research Institute/Electron Science Research Institute




This article was originally published as: Tiporlini, V. , & Alameh, K. (2013). High Sensitivity Optically Pumped Quantum Magnetometer. The Scientific World Journal, 2013(2013), Article 858379. Original article available here


Quantum magnetometers based on optical pumping can achieve sensitivity as high as what SQUID-based devices can attain. In this paper, we discuss the principle of operation and the optimal design of an optically pumped quantum magnetometer. The ultimate intrinsic sensitivity is calculated showing that optimal performance of the magnetometer is attained with an optical pump power of 20 W and an operation temperature of 48°C. Results show that the ultimate intrinsic sensitivity of the quantum magnetometer that can be achieved is 327 fT/Hz1/2 over a bandwidth of 26 Hz and that this sensitivity drops to 130 pT/Hz1/2 in the presence of environmental noise. The quantum magnetometer is shown to be capable of detecting a sinusoidal magnetic field of amplitude as low as 15 pT oscillating at 25 Hz.

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Creative Commons Attribution 3.0 License
This work is licensed under a Creative Commons Attribution 3.0 License.