Spin squeezing via quantum feedback.

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Title Spin squeezing via quantum feedback.
Author Thomsen, Laura Kathrine Wehde; Mancini, S.; Wiseman, Howard Mark
Journal Name Physical Review A: Atomic, Molecular and Optical Physics
Year Published 2002
Place of publication USA
Publisher American Physical Society
Abstract We propose a quantum feedback scheme for producing deterministically reproducible spin squeezing. The results of a continuous nondemolition atom number measurement are fed back to control the quantum state of the sample. For large samples and strong cavity coupling, the squeezing parameter minimum scales inversely with atom number, approaching the Heisenberg limit. Furthermore, ceasing the measurement and feedback when this minimum has been reached will leave the sample in the maximally squeezed spin state.
Peer Reviewed Yes
Published Yes
Publisher URI http://prola.aps.org/abstract/PRA/v65/i6/e061801
Alternative URI http://dx.doi.org/10.1103/PhysRevA.65.061801
Copyright Statement Copyright 2002 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 65
Page from 061801.1
Page to 061801.4
ISSN 1050-2947
Date Accessioned 2003-04-11
Language en_AU
Research Centre Centre for Quantum Dynamics
Faculty Faculty of Science
Subject PRE2009-Quantum Optics and Lasers; PRE2009-Theoretical Physics
URI http://hdl.handle.net/10072/6993
Publication Type Journal Articles (Refereed Article)
Publication Type Code c1

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