Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Feedback control of the fluorescence light squeezing   We consider a two-level atom stimulated by a coherent monochromatic laser and
we study how to enhance the squeezing of the fluorescence light and of the atom
itself in the presence of a Wiseman-Milburn feedback mechanism, based on the
homodyne detection of a fraction of the emitted light. Besides analyzing the
effect of the control parameters on the squeezing properties of the light and
of the atom, we also discuss the relations among these. The problem is tackled
inside the framework of quantum trajectory theory.

10
The categories of this paper are: q-bio
5
The categories of this paper are: gr-qc
32
The categories of this paper are: atom-ph
9
The categories of this paper are: nlin
14
The categories of this paper are: math-ph
23
The categories of this paper are: solv-int
30
The categories of this paper are: q-alg
34
The categories of this paper are: chem-ph
26
The categories of this paper are: bayes-an
0
The categories of this paper are: hep-ph
28
The categories of this paper are: alg-geom
18
The categories of this paper are: econ
33
The categories of this paper are: plasm-ph
16
The categories of this paper are: stat
12
The categories of this paper are: nucl-th
15
The categories of this paper are: nucl-ex