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Title: Enhancement of field squeezing using coherent feedback

Abstract

The theory of quantum feedback networks has recently been developed with the aim of showing how quantum input-output components may be connected together so as to control, stabilize, or enhance the performance of one of the subcomponents. In this paper, we show how the degree to which an idealized component (a degenerate parametric amplifier in the strong-coupling regime) can squeeze input fields may be enhanced by placing the component in loop in a simple feedback mechanism involving a beam splitter. We study the spectral properties of output fields, placing particular emphasis on the elastic and inelastic components of the power density.

Authors:
;  [1]
  1. Institute for Mathematics and Physics, Aberystwyth University, Wales SY23 3BZ (United Kingdom)
Publication Date:
OSTI Identifier:
21316346
Resource Type:
Journal Article
Journal Name:
Physical Review. A
Additional Journal Information:
Journal Volume: 80; Journal Issue: 4; Other Information: DOI: 10.1103/PhysRevA.80.042107; (c) 2009 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1050-2947
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; BEAM SPLITTING; BEAMS; CONTROL; FEEDBACK; OPTICS; PARAMETRIC AMPLIFIERS; PERFORMANCE; POWER DENSITY; STRONG-COUPLING MODEL

Citation Formats

Gough, J E, and Wildfeuer, S. Enhancement of field squeezing using coherent feedback. United States: N. p., 2009. Web. doi:10.1103/PHYSREVA.80.042107.
Gough, J E, & Wildfeuer, S. Enhancement of field squeezing using coherent feedback. United States. https://doi.org/10.1103/PHYSREVA.80.042107
Gough, J E, and Wildfeuer, S. 2009. "Enhancement of field squeezing using coherent feedback". United States. https://doi.org/10.1103/PHYSREVA.80.042107.
@article{osti_21316346,
title = {Enhancement of field squeezing using coherent feedback},
author = {Gough, J E and Wildfeuer, S},
abstractNote = {The theory of quantum feedback networks has recently been developed with the aim of showing how quantum input-output components may be connected together so as to control, stabilize, or enhance the performance of one of the subcomponents. In this paper, we show how the degree to which an idealized component (a degenerate parametric amplifier in the strong-coupling regime) can squeeze input fields may be enhanced by placing the component in loop in a simple feedback mechanism involving a beam splitter. We study the spectral properties of output fields, placing particular emphasis on the elastic and inelastic components of the power density.},
doi = {10.1103/PHYSREVA.80.042107},
url = {https://www.osti.gov/biblio/21316346}, journal = {Physical Review. A},
issn = {1050-2947},
number = 4,
volume = 80,
place = {United States},
year = {Thu Oct 15 00:00:00 EDT 2009},
month = {Thu Oct 15 00:00:00 EDT 2009}
}