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 Crossed D sign¡Crossed D sign Crossed D sign¢ magnetometer sensitivity may exceed that of the EPR device by two orders of magnitude.

Original languageEnglish
Title of host publicationNovel Optical Systems, Methods, and Applications XXIII
EditorsCornelius F. Hahlweg, Joseph R. Mulley
Number of pages6
ISBN (Electronic)9781510637726
Publication statusPublished - 21 Aug 2020
EventNovel Optical Systems, Methods, and Applications XXIII 2020 - Virtual, Online, United States
Duration: 24 Aug 20204 Sep 2020

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X


ConferenceNovel Optical Systems, Methods, and Applications XXIII 2020
Country/TerritoryUnited States
CityVirtual, Online


  • Atomic clock
  • CPT resonance
  • Optic cell
  • Quadrature signal
  • Rubidium
  • optic cell
  • rubidium
  • quadrature signal


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