Comparison of quantum CPT and EPR magnetometers

Daba Radnatarov; Valerii Andryushkov; Sergey Kobtsev

doi:10.1117/12.2568335

21 August 2020 Comparison of quantum CPT and EPR magnetometers

Daba Radnatarov, Valerii Andryushkov, Sergey Kobtsev

Proceedings Volume 11483, Novel Optical Systems, Methods, and Applications XXIII; 114830S (2020) https://doi.org/10.1117/12.2568335
Event: SPIE Optical Engineering + Applications, 2020, Online Only

Conference Poster

Abstract

Experimentally compared for the first time is the sensitivity of two magnetometer types implemented on a common base of rubidium atomic clock with coherent population trapping (CPT). The first magnetometer used a magneto-sensitive optically excited CPT resonance, the other measured field strength through the electron paramagnetic resonance (EPR) excited with alternating magnetic field. We show advantages and limitations of these promising quantum sensing technologies. Sensitivity of both types was measured under resonance excitation on the D1 line of ⁸⁷Rb. We demonstrate that the СРТ magnetometer sensitivity may exceed that of the EPR device by two orders of magnitude.

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Daba Radnatarov, Valerii Andryushkov, and Sergey Kobtsev "Comparison of quantum CPT and EPR magnetometers", Proc. SPIE 11483, Novel Optical Systems, Methods, and Applications XXIII, 114830S (21 August 2020); https://doi.org/10.1117/12.2568335

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