Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Single photon superradiance and cooperative Lamb shift in an
  optoelectronic device   Single photon superradiance is a strong enhancement of spontaneous emission
appearing when a single excitation is shared between a large number of
two-level systems. This enhanced rate can be accompanied by a shift of the
emission frequency, the cooperative Lamb shift, issued from the exchange of
virtual photons between the emitters. In this work we present a semiconductor
optoelectronic device allowing the observation of these two phenomena at room
temperature. We demonstrate experimentally and theoretically that plasma
oscillations in spatially separated quantum wells interact through real and
virtual photon exchange. This gives rise to a superradiant mode displaying a
large cooperative Lamb shift.

23
The categories of this paper are: solv-int
20
The categories of this paper are: acc-phys
21
The categories of this paper are: adap-org
26
The categories of this paper are: bayes-an
33
The categories of this paper are: plasm-ph
18
The categories of this paper are: econ
12
The categories of this paper are: nucl-th
29
The categories of this paper are: funct-an
31
The categories of this paper are: ao-sci
8
The categories of this paper are: hep-ex
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The categories of this paper are: chao-dyn
11
The categories of this paper are: hep-lat
16
The categories of this paper are: stat
6
The categories of this paper are: astro-ph
14
The categories of this paper are: math-ph
36
The categories of this paper are: cmp-lg