Technical Physics

, Volume 49, Issue 6, pp 779–783 | Cite as

Experimental demonstration of the sensitivity of an optically pumped quantum magnetometer

  • E. B. Alexandrov
  • M. V. Balabas
  • A. K. Vershovski
  • A. S. Pazgalev
Experimental Instruments and techniques


The sensitivity σ of an optically pumped quantum magnetometer is measured directly by comparing the output frequencies of 85Rb and 87Rb magnetometers integrated in a single two-isotope cell. The result σ87=59.6±6 fT Hz−1/2 agrees well with the value σ 87 light =53.7±2 fT Hz−1/2 obtained indirectly by measuring 87 the ratio of the resonance steepness to the shot noise of light.


Experimental Demonstration Shot Noise 87Rb Output Frequency Quantum Magnetometer 
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Copyright information

© MAIK "Nauka/Interperiodica" 2004

Authors and Affiliations

  • E. B. Alexandrov
    • 1
  • M. V. Balabas
    • 1
  • A. K. Vershovski
    • 1
  • A. S. Pazgalev
    • 1
  1. 1.All-Russia Research CenterVavilov State Optical InstituteSt. PetersburgRussia

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