Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Demonstrating mesoscopic superpositions in double-well Bose-Einstein
  condensates   The availability of Bose-Einstein condensates as mesoscopic or macroscopic
quantum objects has aroused new interest in the possiblity of making and
detecting coherent superpositions involving many atoms. In this article we show
that it may be possible to generate such a superposition state in a reasonably
short time using Feshbach resonances to tune the inter-atomic interactions in a
double-well condensate.
  We also consider the important problem of distinguishing whether a coherent
superposition or a statistical mixture is generated by a given experimental
procedure. We find that unambiguously distinguishing even a perfect `NOON'
state from a statistical mixture using standard detection methods will present
experimental difficulties.

27
The categories of this paper are: comp-gas
20
The categories of this paper are: acc-phys
8
The categories of this paper are: hep-ex
25
The categories of this paper are: patt-sol
15
The categories of this paper are: nucl-ex
22
The categories of this paper are: chao-dyn
9
The categories of this paper are: nlin
35
The categories of this paper are: mtrl-th
19
The categories of this paper are: eess
34
The categories of this paper are: chem-ph
30
The categories of this paper are: q-alg
1
The categories of this paper are: cs
10
The categories of this paper are: q-bio
17
The categories of this paper are: q-fin
7
The categories of this paper are: hep-th
16
The categories of this paper are: stat