Phys. Rev. A 70, 052102 (2004) [5 pages]Estimation of a classical parameter with Gaussian probes: Magnetometry with collective atomic spinsReceived 23 February 2004; published 8 November 2004 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. © 2004 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevA.70.052102
DOI:
10.1103/PhysRevA.70.052102
PACS:
03.65.Ta, 03.67.Mn, 07.55.Ge
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