Magnetic Induction Imaging with a cold-atom radio-frequency magnetometer

Abstract

The sensitive detection of either static or radio-frequency \textsc{(rf)} magnetic fields is essential to many fundamental studies and applications. Here, we demonstrate the operation of a cold-atom-based, \textsc{rf} magnetometer in performing {1-D and 2-D imaging} of small metallic objects. It is based on a cold ${}^{85}$Rb atomic sample, and operates in an unshielded environment with no active field stabilization. It shows a sensitivity up to $200\mathrm{pT}/\sqrt{\mathrm{Hz}}$ in the $5-35\mathrm{kHz}$ range bandwidth and can resolve a cut $0.4\mathrm{mm}$ wide in a $0.8\mathrm{mm}$ thick metallic foil. The characteristics of our system make it a good candidate for applications in civil and industrial surveillance.

5 pages, 5 figures

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Cited by in corpus (6)

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• Multipassage Landau-Zener tunneling oscillations in transverse/longitudinal dual dressing of atomic qubits
• Electromagnetic Induction Imaging: Signal Detection Based on Tuned-Dressed Optical Magnetometry