Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Correlations between cascaded photons from spatially localized
  biexcitons in ZnSe   Radiative cascades emit correlated photon pairs, providing a pathway for the
generation of entangled photons. The realization of a radiative cascade with
impurity atoms in semiconductors, a leading platform for the generation of
quantum light, would therefore provide a new avenue for the development of
entangled photon pair sources. Here we demonstrate a radiative cascade from the
decay of a biexciton at an impurity-atom complex in a ZnSe quantum well. The
emitted photons show clear temporal correlations revealing the time--ordering
of the cascade. Our result establishes impurity atoms in ZnSe as a potential
platform for photonic quantum technologies using radiative cascades.

34
The categories of this paper are: chem-ph
2
The categories of this paper are: math
14
The categories of this paper are: math-ph
15
The categories of this paper are: nucl-ex
8
The categories of this paper are: hep-ex
7
The categories of this paper are: hep-th
37
The categories of this paper are: supr-con
22
The categories of this paper are: chao-dyn
6
The categories of this paper are: astro-ph
17
The categories of this paper are: q-fin
24
The categories of this paper are: dg-ga
31
The categories of this paper are: ao-sci
23
The categories of this paper are: solv-int
21
The categories of this paper are: adap-org
36
The categories of this paper are: cmp-lg
18
The categories of this paper are: econ