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Quantum Simulation
Magnetic Field Estimation at and beyond 1/N Scaling via an Effective Nonlinearity
arXiv
Authors: Bradley A. Chase, Heather L. Partner, Brigette D. Black, Benjamin Q. Baragiola, Robert L. Cook, JM Geremia
Year
2007
Paper ID
49314
Status
Preprint
Abstract Read
~2 min
Abstract Words
66
Citations
N/A
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.
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- 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...
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