Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Plug&play fibre-coupled 73 kHz single-photon source operating in the
  telecom O-band   A user-friendly fibre-coupled single-photon source operating at telecom
wavelengths is a key component of photonic quantum networks providing long-haul
ultra-secure data exchange. To take full advantage of quantum-mechanical data
protection and to maximize the transmission rate and distance, a true quantum
source providing single-photons on demand is highly desirable. We tackle this
great challenge by developing a ready to use semiconductor quantum dot
(QD)-based device that launches single photons at a wavelength of 1.3 um
directly into a single-mode optical fibre. In our approach the QD is
deterministically integrated into a nanophotonic structure to ensure efficient
on-chip coupling into a fibre. The whole arrangement is integrated into a 19"
compatible housing to enable stand-alone operation by cooling via a compact
Stirling cryocooler. The realized source delivers single photons with
multiphoton events probability as low as 0.15 and single-photon emission rate
up to 73 kHz into a standard telecom single-mode fibre.

14
The categories of this paper are: math-ph
32
The categories of this paper are: atom-ph
13
The categories of this paper are: quant-ph
35
The categories of this paper are: mtrl-th
20
The categories of this paper are: acc-phys
37
The categories of this paper are: supr-con
18
The categories of this paper are: econ
9
The categories of this paper are: nlin
11
The categories of this paper are: hep-lat
22
The categories of this paper are: chao-dyn
33
The categories of this paper are: plasm-ph
7
The categories of this paper are: hep-th
2
The categories of this paper are: math
30
The categories of this paper are: q-alg
19
The categories of this paper are: eess
15
The categories of this paper are: nucl-ex