Estimation of a classical parameter with gaussian probes: magnetometry with collective atomic spins

Details Estimation of a classical parameter with gaussian probes: magnetometry with collective atomic spins Estimation of a classical parameter with gaussian probes: magnetometry with collective atomic spins

2004-02-23

arxiv.org/abs/quant-ph/0402158v2

Phys. Rev. A Vol. 70, 052102 (2004)

Physics

Quantum Physics

4 pages, 1 figure

Scientific paper

10.1103/PhysRevA.70.052102

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.

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