Replacing quantum feedback with open-loop control and quantum filtering

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Title Replacing quantum feedback with open-loop control and quantum filtering
Author Combes, Joshua Leo Alfred; Wiseman, Howard Mark; Scott, Andrew James
Journal Name Physical Review A (Atomic, Molecular and Optical Physics)
Year Published 2010
Place of publication United States
Publisher American Physical Society
Abstract Feedback control protocols can stabilize and enhance the operation of quantum devices, however, unavoidable delays in the feedback loop adversely affect their performance. We introduce a quantum control methodology, combining open-loop control with quantum filtering, which is not constrained by feedback delays. For the problems studied (rapid purification and rapid measurement) we analytically derive lower bounds on the control performance that are comparable with the best corresponding bounds for feedback protocols.
Peer Reviewed Yes
Published Yes
Alternative URI http://dx.doi.org/10.1103/PhysRevA.81.020301
Copyright Statement Copyright 2010 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 81
Issue Number 2
Page from 020301-1
Page to 020301-4
ISSN 1050-2947
Date Accessioned 2010-05-17
Language en_AU
Research Centre Centre for Quantum Dynamics
Faculty Faculty of Science, Environment, Engineering and Technology
Subject Quantum Information, Computation and Communication
URI http://hdl.handle.net/10072/33182
Publication Type Journal Articles (Refereed Article)
Publication Type Code c1

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