Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Nonclassical correlated deterministic single-photon pairs for a trapped
  atom in bimodal cavities   Single photons and single-photon pairs, inherently nonclassical in their
nature, are fundamental elements of quantum sciences and technologies. Here, we
propose to realize the nonclassical correlated deterministic photon pairs at
the single-photon level for a single atom trapped in bimodal cavities. It is
shown that the photon emissions for bimodal cavities exhibit a high single
photon purity and relatively large intracavity photon numbers, which are
ascribed to the combination of optical Stark shift enhanced energy-spectrum
anharmonicity and quantum interference suppressed two-photon excitation. Our
scheme generates photon-photon pairs with strong photon blockade for cavity
modes via constructing a highly tunable cavity-enhanced deterministic
parametric down-conversion process. Furthermore, we show that the
cross-correlation function between the two cavity modes vastly violates the
Cauchy-Schwarz inequality of the classical boundary, which unambiguously
demonstrates the nonclassicality of the single-photon pairs. Our result reveals
a prominent strategy to generate the high-quality two-mode single-photon
sources with strong nonclassical correlation, which could provide versatile
applications in distribution of quantum networks, long distance quantum
communication, and fundamental tests of quantum physics.

24
The categories of this paper are: dg-ga
1
The categories of this paper are: cs
9
The categories of this paper are: nlin
11
The categories of this paper are: hep-lat
0
The categories of this paper are: hep-ph
6
The categories of this paper are: astro-ph
15
The categories of this paper are: nucl-ex
10
The categories of this paper are: q-bio
31
The categories of this paper are: ao-sci
33
The categories of this paper are: plasm-ph
25
The categories of this paper are: patt-sol
37
The categories of this paper are: supr-con
12
The categories of this paper are: nucl-th
29
The categories of this paper are: funct-an
3
The categories of this paper are: physics
27
The categories of this paper are: comp-gas