Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A Bell's Inequality Test with Entangled Atoms   Previous work on Bell's inequality realised in the laboratory has used
entangled photons. Here we describe how entangled atoms can violate Bell's
inequality, and how these violations can be measured with a very high detection
efficiency. We first discuss a simple scheme based on two-level atoms inside a
cavity to prepare the entangled state. We then discuss a scheme using
four-level atoms, which requires a parameter regime much easier to access
experimentally using current technology. As opposed to other schemes, our
proposal relies on the presence of finite decay rates and its implementation
should therefore be much less demanding.

35
The categories of this paper are: mtrl-th
6
The categories of this paper are: astro-ph
27
The categories of this paper are: comp-gas
8
The categories of this paper are: hep-ex
1
The categories of this paper are: cs
17
The categories of this paper are: q-fin
0
The categories of this paper are: hep-ph
37
The categories of this paper are: supr-con
30
The categories of this paper are: q-alg
31
The categories of this paper are: ao-sci
29
The categories of this paper are: funct-an
14
The categories of this paper are: math-ph
18
The categories of this paper are: econ
5
The categories of this paper are: gr-qc
10
The categories of this paper are: q-bio
26
The categories of this paper are: bayes-an