Magnetic Field Estimation at and beyond 1/N Scaling via an Effective Nonlinearity
Quantum Physics
2009-04-14 v2
Abstract
We provide evidence, based on direct simulation of the quantum Fisher information, that 1/N scaling of the sensitivity with the number of atoms N in an atomic magnetometer can be surpassed by double-passing a far-detuned laser through the atomic system during Larmor precession. Furthermore, we predict that for N>>1, the proposed double-pass atomic magnetometer can essentially achieve 1/N scaling without requiring any appreciable amount of entanglement.
Keywords
Cite
@article{arxiv.0708.2730,
title = {Magnetic Field Estimation at and beyond 1/N Scaling via an Effective Nonlinearity},
author = {Bradley A. Chase and Heather L. Partner and Brigette D. Black and Benjamin Q. Baragiola and Robert L. Cook and JM Geremia},
journal= {arXiv preprint arXiv:0708.2730},
year = {2009}
}
Comments
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