Long-Term Characterizations of an Absolute Magnetometer Based on EIT

ORAL

Abstract

Accurate magnetometers, such as proton magnetometers and Mz atomic magnetometers, play an important role in fields like navigation without GPS, ordnance detection, geomagnetic surveying, and fundamental physics. Such sensors lack the capability to yield vector information without external coil systems and calibration. Here, we present the development of a vector magnetometer based on electromagnetically induced transparency in a three-level system. This EIT magnetometer can produce scalar and vector information of a magnetic field simultaneously. We have measured the stability of such a magnetometer and find that the photon-shot noise limit is better than 20 pT/√Hz. Common systematics that affect the long-term stability and accuracy of the EIT magnetometer, like light shifts and pressure shifts, will be discussed.

*This research was supported by the Defense Advanced Research Projects Agency (DARPA) under the US Army Research Office (ARO) award W911NF-21-2-0094. The research performed by J.M. and A.M. was carried out at the JPL, Caltech, under a contract with the NASA.

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Presenters

  • Isaac Fan

    • Department of Physics, University of Colorado Boulder and Time and Frequency Division, National Institute of Standards and Technology Boulder

Authors

  • Isaac Fan

    • Department of Physics, University of Colorado Boulder and Time and Frequency Division, National Institute of Standards and Technology Boulder

  • Yang Li

    • National Institute of Standards and Technology
    • Department of Physics, University of Colorado Boulder and Time and Frequency Division, National Institute of Standards and Technology Boulder

  • Daniel Rodriguez Castillo

    • National Institute of Standards and Technology
    • Department of Physics, University of Colorado Boulder and Time and Frequency Division, National Institute of Standards and Technology Boulder

  • Mario A Maldonado

    • Department of Physics, William & Mary

  • Alex Toyryla

    • The college of William and Mary
    • Department of Physics, William & Mary

  • Irina Novikova

    • Department of Physics, William & Mary

  • Eugeniy Mikhailov

    • The college of William and Mary
    • William & Mary
    • William &Mary
    • Department of Physics, William & Mary

  • Jamie McKelvy

    • Jet Propulsion Laboratory
    • Jet Propulsion Laboratory, California Institute of Technology

  • Andrey B Matsko

    • Jet Propulsion Laboratory
    • Jet Propulsion Laboratory, California Institute of Technology

  • John E Kitching

    • National Institute of Standards and Technology Boulder
    • National Institute of Standards and Technology, Boulder, Colorado 80305, USA