Enhancement of field squeezing using coherent feedback
Enhancement of field squeezing using coherent feedback
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DOI：
10.1103/physreva.80.042107
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发表时间：
2009-10-01
影响因子：
2.9
通讯作者：
Wildfeuer, S.
中科院分区：
文献类型：
--
作者：
Gough, J. E.;Wildfeuer, S.
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.
