Cancellation of nonlinear Zeeman shifts with light shifts

K. Jensen, V. M. Acosta, J. M. Higbie, M. P. Ledbetter, S. M. Rochester, and D. Budker
Phys. Rev. A 79, 023406 – Published 4 February 2009

Abstract

Nonlinear Zeeman (NLZ) shifts arising from magnetic-field mixing of the two hyperfine ground states in alkali-metal atoms lead to splitting of magnetic-resonance lines. This is a major source of sensitivity degradation and the so-called “heading errors” of alkali-metal-vapor atomic magnetometers operating in the geophysical field range (B0.20.7G). Here, it is shown theoretically and experimentally that NLZ shifts can be effectively canceled by light shifts caused by a laser field of appropriate intensity, polarization, and frequency, a technique that can be readily applied in practical situations.

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  • Received 13 October 2008

DOI:https://doi.org/10.1103/PhysRevA.79.023406

©2009 American Physical Society

Authors & Affiliations

K. Jensen1,2,*, V. M. Acosta3, J. M. Higbie4, M. P. Ledbetter3, S. M. Rochester3, and D. Budker3,5,†

  • 1Niels Bohr Institute, University of Copenhagen, DK 2100, Denmark
  • 2QUANTOP, Danish National Research Foundation Center for Quantum Optics, DK 2100, Denmark
  • 3Department of Physics, University of California at Berkeley, Berkeley, California 94720-7300, USA
  • 4Department of Physics and Astronomy, Bucknell University, Lewisburg, Pennsylvania 17837, USA
  • 5Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA

  • *kjensen@nbi.dk
  • budker@berkeley.edu

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Vol. 79, Iss. 2 — February 2009

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