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Published October 1, 2005 | public
Journal Article Open

Modelling and feedback control design for quantum state preparation


The goal of this article is to provide a largely self-contained introduction to the modelling of controlled quantum systems under continuous observation, and to the design of feedback controls that prepare particular quantum states. We describe a bottom-up approach, where a field-theoretic model is subjected to statistical inference and is ultimately controlled. As an example, the formalism is applied to a highly idealized interaction of an atomic ensemble with an optical field. Our aim is to provide a unified outline for the modelling, from first principles, of realistic experiments in quantum control.

Additional Information

Copyright © 2005 Institute of Physics Received 29 April 2005, accepted for publication 15 July 2005, Published 14 September 2005, Print publication: Issue 10 (October 2005) The authors would like to thank Luc Bouten, J M Geremia and Howard Wiseman for many fruitful discussions. This work was supported by ARO and the Caltech MURI Center for Quantum Networks. JKS acknowledges a Hertz fellowship.


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