We study and develop optically-pumped magnetometers, utilising micro-fabricated vapor cells. We use both double-resonance and free-induction-decay magnetometers, with an emphasis on making compact devices. Applications range from geophysical surveying to livestock cardiac health monitoring.

This work is part of the continuing UK Quantum Technology Hub in Sensing and Metrology.

Funding: EPSRC grants EP/M013294/1 and EP/T001046/1, InnovateUK EP/R019614/1.

Publications

• J.U. Sutter, O. Lewis, C. Robinson, A. McMahon, R. Boyce, R. Bragg, A. Macrae, J. Orton, V. Shah, S.J. Ingleby, P.F. Griffin and E. Riis, Recording the heart beat of cattle using a gradiometer system of optically pumped magnetometers, Comp. Elec. Agriculture 177, 105651 (2020).
• C. O’Dwyer, S.J. Ingleby, I.C. Chalmers, P.F. Griffin & E. Riis, Feed-forward measurement scheme for periodic noise suppression in atomic magnetometry, Rev. Sci. Instrum. 91, 045103 (2020).
• S. J. Ingleby, C. O’Dwyer, P. F. Griffin, A. S. Arnold & E. Riis, Vector magnetometry exploiting phase-geometry effects in a double-resonance alignment magnetometer, Phys. Rev. Appl. 10, 034035 (2018).
• D. Hunter, S. Piccolomo, J. D. Pritchard, N. L. Brockie, T. E. Dyer & E. Riis, Free-induction-decay magnetometer based on a microfabricated Cs vapor cell, Phys. Rev. Appl. 10, 014002 (2018).
• S.J. Ingleby, C. O’Dwyer, P.F. Griffin, A.S. Arnold & E. Riis, Orientational effects on the amplitude and phase of polarimeter signals in double-resonance atomic magnetometry, Phys. Rev. A 96, 013429 (2017).
• S.J. Ingleby, P.F. Griffin, A.S. Arnold, M. Chouliara & E. Riis, High-precision control of static magnetic field magnitude, orientation, and gradient using optically pumped vapour cell magnetometry, Rev. Sci. Instrum. 88, 043109 (2017).