Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Single-photon Emission from an Acoustically-driven Lateral
  Light-emitting Diode   Single-photon sources are essential building blocks in quantum photonic
networks, where quantum-mechanical properties of photons are utilised to
achieve quantum technologies such as quantum cryptography and quantum
computing. Most conventional solid-state single-photon sources are based on
single emitters such as self-assembled quantum dots, which are created at
random locations and require spectral filtering. These issues hinder the
integration of a single-photon source into a scaleable photonic quantum network
for applications such as on-chip photonic quantum processors. In this work,
using only regular lithography techniques on a conventional GaAs quantum well,
we realise an electrically triggered single-photon source with a GHz repetition
rate and without the need for spectral filtering. In this device, a single
electron is carried in the potential minimum of a surface acoustic wave (SAW)
and is transported to a region of holes to form an exciton. The exciton then
decays and creates a single photon in a lifetime of ~ 100ps. This SAW-driven
electroluminescence (EL) yields photon antibunching with $g^{(2)}(0) = 0.39 \pm
0.05$, which satisfies the common criterion for a single-photon source
$g^{(2)}(0) < 0.5$. Furthermore, we estimate that if a photon detector receives
a SAW-driven EL signal within one SAW period, this signal has a 79%-90% chance
of being a single photon. This work shows that a single-photon source can be
made by combining single-electron transport and a lateral n-i-p junction. This
approach makes it possible to create multiple synchronised single-photon
sources at chosen positions with photon energy determined by quantum-well
thickness. Compared with conventional quantum-dot-based single-photon sources,
this device may be more suitable for an on-chip integrated photonic quantum
network.

36
The categories of this paper are: cmp-lg
14
The categories of this paper are: math-ph
17
The categories of this paper are: q-fin
31
The categories of this paper are: ao-sci
1
The categories of this paper are: cs
11
The categories of this paper are: hep-lat
5
The categories of this paper are: gr-qc
27
The categories of this paper are: comp-gas
6
The categories of this paper are: astro-ph
32
The categories of this paper are: atom-ph
21
The categories of this paper are: adap-org
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The categories of this paper are: chem-ph
22
The categories of this paper are: chao-dyn
2
The categories of this paper are: math
33
The categories of this paper are: plasm-ph
15
The categories of this paper are: nucl-ex