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/T001046/1InnovateUK EP/R019614/1.


  • S. J. Ingleby, P. F. Griffin, T. Dyer, M. S. Mrozowski, and E. Riis, A Digital Alkali Spin MaserSci. Rep. 12, 12888 (2022).
  • 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 magnetometersComp. 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 magnetometryRev. 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 magnetometerPhys. 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 cellPhys. 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 magnetometryPhys. 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 magnetometryRev. Sci. Instrum. 88, 043109 (2017).