Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: On-chip interference of single photons from an embedded quantum dot and
  an external laser   In this work, we demonstrate the on-chip two-photon interference between
single photons emitted by a single self-assembled InGaAs quantum dot and an
external laser. The quantum dot is embedded within one arm of an air-clad
directional coupler which acts as a beam-splitter for incoming light. Photons
originating from an attenuated external laser are coupled to the second arm of
the beam-splitter and then combined with the quantum dot photons, giving rise
to two-photon quantum interference between dissimilar sources. We verify the
occurrence of on-chip Hong-Ou-Mandel interference by cross-correlating the
optical signal from the separate output ports of the directional coupler. This
experimental approach allows us to use classical light source (laser) to assess
in a single step the overall device performance in the quantum regime and probe
quantum dot photon indistinguishability on application realistic time scales.

6
The categories of this paper are: astro-ph
8
The categories of this paper are: hep-ex
10
The categories of this paper are: q-bio
1
The categories of this paper are: cs
34
The categories of this paper are: chem-ph
30
The categories of this paper are: q-alg
13
The categories of this paper are: quant-ph
26
The categories of this paper are: bayes-an
20
The categories of this paper are: acc-phys
19
The categories of this paper are: eess
15
The categories of this paper are: nucl-ex
11
The categories of this paper are: hep-lat
21
The categories of this paper are: adap-org
31
The categories of this paper are: ao-sci
32
The categories of this paper are: atom-ph
9
The categories of this paper are: nlin