Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: An all-silicon single-photon source by unconventional photon blockade   The lack of suitable quantum emitters in silicon and silicon-based materials
has prevented the realization of room temperature, compact, stable, and
integrated sources of single photons in a scalable on-chip architecture, so
far. Current approaches rely on exploiting the enhanced optical nonlinearity of
silicon through light confinement or slow-light propagation, and are based on
parametric processes that typically require substantial input energy and
spatial footprint to reach a reasonable output yield. Here we propose an
alternative all-silicon device that employs a different paradigm, namely the
interplay between quantum interference and the third-order intrinsic
nonlinearity in a system of two coupled optical cavities. This unconventional
photon blockade allows to produce antibunched radiation at extremely low input
powers. We demonstrate a reliable protocol to operate this mechanism under
pulsed optical excitation, as required for device applications, thus
implementing a true single-photon source. We finally propose a state-of-art
implementation in a standard silicon-based photonic crystal integrated circuit
that outperforms existing parametric devices either in input power or footprint
area.

19
The categories of this paper are: eess
0
The categories of this paper are: hep-ph
21
The categories of this paper are: adap-org
29
The categories of this paper are: funct-an
32
The categories of this paper are: atom-ph
17
The categories of this paper are: q-fin
34
The categories of this paper are: chem-ph
27
The categories of this paper are: comp-gas
10
The categories of this paper are: q-bio
37
The categories of this paper are: supr-con
2
The categories of this paper are: math
20
The categories of this paper are: acc-phys
22
The categories of this paper are: chao-dyn
24
The categories of this paper are: dg-ga
1
The categories of this paper are: cs
7
The categories of this paper are: hep-th