Phys. Rev. Lett. 94, 203002 (2005) - Suppression of Spin Projection Noise in Broadband Atomic Magnetometry

Suppression of Spin Projection Noise in Broadband Atomic Magnetometry

JM Geremia, John K. Stockton, and Hideo Mabuchi

Phys. Rev. Lett. 94, 203002 – Published 24 May 2005; Erratum Phys. Rev. Lett. 101, 039902 (2008)

Abstract

We demonstrate that quantum nondemolition measurement, combined with a suitable parameter estimation procedure, can improve the sensitivity of a broadband atomic magnetometer by reducing uncertainty due to spin projection noise. Furthermore, we provide evidence that real-time quantum feedback control offers robustness to classical uncertainties, including shot-to-shot atom number fluctuations, that would otherwise prevent quantum-limited performance.

Received 2 September 2003

DOI:https://doi.org/10.1103/PhysRevLett.94.203002

©2005 American Physical Society

Erratum

Erratum: Suppression of Spin Projection Noise in Broadband Atomic Magnetometry [Phys. Rev. Lett. 94, 203002 (2005)]

J. M. Geremia, John K. Stockton, and Hideo Mabuchi

Phys. Rev. Lett. 101, 039902 (2008)

Authors & Affiliations

JM Geremia^*, John K. Stockton, and Hideo Mabuchi

Physics and Control & Dynamical Systems, California Institute of Technology, Pasadena California 91125, USA

^*Electronic address: jgeremia@Caltech.EDU

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Issue

Vol. 94, Iss. 20 — 27 May 2005

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