Reducing the Linewidth of an Atom Laser by Feedback

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Title Reducing the Linewidth of an Atom Laser by Feedback
Author Wiseman, Howard Mark; Thomsen, Laura Kathrine Wehde
Journal Name Physical Review Letters
Editor George Basbas
Year Published 2001
Place of publication USA
Publisher American Physical Society
Abstract A continuous atom laser will almost certainly have a linewidth dominated by the effect of the atomic interaction energy, which turns fluctuations in the condensate atom number into fluctuations in the condensate frequency. These correlated fluctuations mean that information about the atom number could be used to reduce the frequency fluctuations, by controlling a spatially uniform potential. We show that feedback based on a physically reasonable quantum nondemolition measurement of the atom number of the condensate in situ can reduce the linewidth enormously.
Peer Reviewed Yes
Published Yes
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Copyright Statement Copyright 2001 American Physical Society. This is the author-manuscript version of this paper. Reproduced in accordance with the copyright policy of the publisher. Please refer to the journal's website for access to the definitive, published version.
Volume 86
Issue Number 7
Edition -
Page from 1143
Page to 1147
ISSN 0031-9007
Date Accessioned 2002-04-15
Language en_AU
Research Centre Centre for Quantum Dynamics
Faculty Faculty of Science, Environment, Engineering and Technology
Subject PRE2009-Quantum Optics and Lasers; PRE2009-Theoretical Physics
Publication Type Journal Articles (Refereed Article)
Publication Type Code c1

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