Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Time-delayed quantum coherent Pyragas feedback control of photon
  squeezing in a degenerate parametric oscillator   Quantum coherent feedback control is a measurement-free control method fully
preserving quantum coherence. In this paper we show how time-delayed quantum
coherent feedback can be used to control the degree of squeezing in the output
field of a cavity containing a degenerate parametric oscillator. We focus on
the specific situation of Pyragas-type feedback control where time-delayed
signals are fed back directly into the quantum system. Our results show how
time-delayed feedback can enhance or decrease the degree of squeezing as a
function of time delay and feedback strength.

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The categories of this paper are: chao-dyn
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The categories of this paper are: dg-ga
10
The categories of this paper are: q-bio
28
The categories of this paper are: alg-geom
25
The categories of this paper are: patt-sol
37
The categories of this paper are: supr-con
34
The categories of this paper are: chem-ph
29
The categories of this paper are: funct-an
21
The categories of this paper are: adap-org
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The categories of this paper are: acc-phys
14
The categories of this paper are: math-ph
7
The categories of this paper are: hep-th
23
The categories of this paper are: solv-int
16
The categories of this paper are: stat
18
The categories of this paper are: econ
31
The categories of this paper are: ao-sci