## Squeezing and Feedback

File Size Format
Title Squeezing and Feedback Wiseman, Howard Mark Quantum Squeezing P.D. Drummond, Z. Ficek 2004 Berlin Springer Electro-optical feedback has many features in common with optical nonlinearities and hence is relevant to the generation of squeezing. First, I discuss theoretical and experimental results for traveling-wave feedback, emphasizing how the in-loop'' squeezing (also known as squashing'') differs from free squeezing. Although such feedback, based on ordinary (demolition) photodetection cannot create free squeezing, it can be used to manipulate it. Then I treat feedback based on nonlinear quantum optical measurements (of which non-demolition measurements are one example). These {\em are} able to produce free squeezing, as shown in a number of experiments. Following that I discuss theories showing that intracavity squeezing can be increased using ordinary feedback, and produced using QND-based feedback. Finally, I return to squashed'' fields and present recent results showing that the reduced in-loop fluctuations can suppress atomic decay in a manner analogous to the effect for squeezed fields. Yes Yes http://dx.doi.org/10.1007/978-3-662-09645-1 http://dx.doi.org/10.1007/978-3-662-09645-1_6 Copyright 2004 Springer. This is the author-manuscript version of this paper. It is reproduced here in accordance with the copyright policy of the publisher. Please refer to the publisher’s website for further information. 6 171 223 3540659897 2005-03-08 2015-02-10T04:40:15Z en_US Centre for Quantum Dynamics Faculty of Science PRE2009-Quantum Optics and Lasers http://hdl.handle.net/10072/519 Book Chapters b1