Table of Contents
ISRN Optics
Volume 2012, Article ID 275016, 15 pages
Review Article

Feedback Control in Quantum Optics: An Overview of Experimental Breakthroughs and Areas of Application

Department of Physics & Astronomy, University College London, Gower Street, London WC1E 6BT, UK

Received 15 October 2012; Accepted 19 November 2012

Academic Editors: D. Kouznetsov and A. A. Sukhorukov

Copyright © 2012 Alessio Serafini. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


We present a broad summary of research involving the application of quantum feedback control techniques to optical setups, from the early enhancement of optical amplitude squeezing to the recent stabilisation of photon number states in a microwave cavity, dwelling mostly on the latest experimental advances. Feedback control of quantum optical continuous variables, quantum nondemolition memories, feedback cooling, quantum state control, adaptive quantum measurements, and coherent feedback strategies will all be touched upon in our discussion.