Effects of twin-beam "squashed" light on a three-level atom

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Title Effects of twin-beam "squashed" light on a three-level atom
Author Thomsen, Laura Kathrine Wehde; Wiseman, Howard Mark
Journal Name Physical Review A: Atomic, Molecular and Optical Physics
Editor Bernd Crasemann
Year Published 2001
Place of publication USA
Publisher American Physical Society
Abstract An electro-optical feedback loop can make in-loop light (squashed light) which produces a photocurrent with noise below the standard quantum limit (such as squeezed light). We investigate the effect of squashed light interacting with a three-level atom in the cascade configuration and compare it to the effects produced by squeezed light and classical noise. It turns out that one master equation can be formulated for all three types of light and that this unified formalism can also be applied to the evolution of a two-level atom. We show that squashed light does not mimic all aspects of squeezed light, and in particular, it does not produce the characteristic linear intensity dependence of the population of the upper-most level of the cascade three-level atom. Nevertheless, it has nonclassical transient effects in the de-excitation.
Peer Reviewed Yes
Published Yes
Publisher URI http://prola.aps.org/browse/PRA
Alternative URI http://dx.doi.org/10.1103/PhysRevA.64.043805
Copyright Statement Copyright 2001 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 64
Issue Number 4
Page from 043805.1
Page to 043805.12
ISSN 1050-2947
Date Accessioned 2002-04-15
Date Available 2009-12-01T05:23:59Z
Language en_AU
Research Centre Centre for Quantum Dynamics
Faculty Faculty of Science
Subject PRE2009-Theoretical Physics
URI http://hdl.handle.net/10072/3769
Publication Type Journal Articles (Refereed Article)
Publication Type Code c1

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