Published May 27, 2005
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Journal Article
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Suppression of spin projection noise in broadband atomic magnetometry
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.
Additional Information
©2005 The American Physical Society. Received 2 September 2003; revised 15 February 2005; published 24 May 2005. This work was supported by the NSF (PHY-9987541, EIA-0086038), the ONR (N00014-00-1-0479), and the Caltech MURI Center for Quantum Networks (DAAD19-00-1-0374). J. K. S. acknowledges the Hertz Foundation. We thank Ramon van Handel, Andrew Berglund, Michael Armen, Andrew Doherty, Dima Budker, and Dan Kleppner and Vladan Vuletic for helpful discussions.Files
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Additional details
- Eprint ID
- 3048
- Resolver ID
- CaltechAUTHORS:GERprl05
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2006-05-12Created from EPrint's datestamp field
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2021-11-08Created from EPrint's last_modified field