Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Strongly coupling a cavity to inhomogeneous ensembles of emitters :
  potential for long lived solid-state quantum memories   We investigate theoretically the coupling of a cavity mode to a continuous
distribution of emitters. We discuss the influence of the emitters
inhomogeneous broadening on the existence and on the coherence properties of
the polaritonic peaks. We find that their coherence depends crucially on the
shape of the distribution and not only on its width. Under certain conditions
the coupling to the cavity protects the polaritonic states from inhomogeneous
broadening, resulting in a longer storage time for a quantum memory based on
emitters ensembles. When two different ensembles of emitters are coupled to the
resonator, they support a peculiar collective dark state, also very attractive
for the storage of quantum information.

17
The categories of this paper are: q-fin
33
The categories of this paper are: plasm-ph
24
The categories of this paper are: dg-ga
25
The categories of this paper are: patt-sol
7
The categories of this paper are: hep-th
2
The categories of this paper are: math
18
The categories of this paper are: econ
19
The categories of this paper are: eess
20
The categories of this paper are: acc-phys
11
The categories of this paper are: hep-lat
1
The categories of this paper are: cs
12
The categories of this paper are: nucl-th
36
The categories of this paper are: cmp-lg
22
The categories of this paper are: chao-dyn
5
The categories of this paper are: gr-qc
10
The categories of this paper are: q-bio