Estimation of a classical parameter with Gaussian probes: Magnetometry with collective atomic spins

Klaus Mølmer and Lars Bojer Madsen
Phys. Rev. A 70, 052102 – Published 8 November 2004

Abstract

We present a theory for the estimation of a classical magnetic field by an atomic sample with a Gaussian distribution of collective spin components. By incorporating the magnetic field and the probing laser field as quantum variables with Gaussian distributions on equal footing with the atoms, we obtain a very versatile description which is readily adapted to include probing with squeezed light, dissipation, and loss and additional measurement capabilities on the atomic system.

  • Figure
  • Received 23 February 2004

DOI:https://doi.org/10.1103/PhysRevA.70.052102

©2004 American Physical Society

Authors & Affiliations

Klaus Mølmer1 and Lars Bojer Madsen2

  • 1Danish National Research Foundation Center for Quantum Optics and Department of Physics and Astronomy, University of Aarhus, 8000 Århus C, Denmark
  • 2Department of Physics and Astronomy, University of Aarhus, 8000 Århus C, Denmark

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Issue

Vol. 70, Iss. 5 — November 2004

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