Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/17226
Title: Squeezing enhancement of degenerate parametric amplifier via coherent feedback control
Authors: Bian, C
Zhang, G
Lee, HWJ 
Keywords: nonlinear optimisation
quantum coherent feedback control
quantum optics
squeezing
Issue Date: 2012
Publisher: Taylor & Francis Ltd
Source: International journal of control, 2012, v. 85, no. 12, p. 1865-1875 How to cite?
Journal: International Journal of Control 
Abstract: The purpose of this article is to present an efficient coherent feedback control technique for squeezing enhancement of degenerate parametric amplifiers (DPAs). The feedback controllers to be designed are in the form of linear quantum stochastic systems which can be described by quantum feedback networks theory recently developed. The problem of squeezing enhancement is formulated as a non-convex constrained nonlinear programming problem, whose solution yields the coherent feedback controllers to be designed. Compared with the previous study, the proposed approach reveals clear advantage when DPAs are lossy, as is always the case in practice. Based on the recently developed quantum network synthesis theory, we show how the designed coherent feedback controllers can be implemented by means of quantum optical devices.
URI: http://hdl.handle.net/10397/17226
ISSN: 0020-7179
DOI: 10.1080/00207179.2012.706872
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