Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Few photon transport in a waveguide coupled to a pair of collocated
  two-level atoms   We calculate the one- and two-photon scattering matrices of a pair of
collocated non-identical two-level atoms coupled to a waveguide. We show that
by proper choice of a two-photon input, the background fluorescence by the
atoms may be completely quenched, as a result of quantum interference, and that
when the atoms' detuning is smaller than their linewidths, extremely narrow
fluorescence features emerge. Furthermore, the system emits a two-photon bound
state which can display spatial oscillations/quantum beats, and can be tuned
from bunched to anti-bunched statistics as the total photon energy is varied.

23
The categories of this paper are: solv-int
34
The categories of this paper are: chem-ph
8
The categories of this paper are: hep-ex
6
The categories of this paper are: astro-ph
26
The categories of this paper are: bayes-an
36
The categories of this paper are: cmp-lg
30
The categories of this paper are: q-alg
15
The categories of this paper are: nucl-ex
28
The categories of this paper are: alg-geom
25
The categories of this paper are: patt-sol
31
The categories of this paper are: ao-sci
33
The categories of this paper are: plasm-ph
17
The categories of this paper are: q-fin
3
The categories of this paper are: physics
14
The categories of this paper are: math-ph
5
The categories of this paper are: gr-qc