Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Single-atom aided probe of the decoherence of a Bose-Einstein condensate   We study a two-level atom coupled to a Bose-Einstein condensate. We show that
the rules governing the decoherence of mesoscopic superpositions involving
different classical-like states of the condensate can be probed using this
system. This scheme is applicable irrespective of whether the condensate is
initially in a coherent, thermal or more generally in any mixture of coherent
states. The effects of atom loss and finite temperature to the decoherence can
therefore be studied. We also discuss the various noise sources causing the
decoherence.

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The categories of this paper are: mtrl-th
11
The categories of this paper are: hep-lat
37
The categories of this paper are: supr-con
20
The categories of this paper are: acc-phys
15
The categories of this paper are: nucl-ex
9
The categories of this paper are: nlin
22
The categories of this paper are: chao-dyn
30
The categories of this paper are: q-alg
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The categories of this paper are: funct-an
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The categories of this paper are: adap-org
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The categories of this paper are: dg-ga
2
The categories of this paper are: math
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The categories of this paper are: atom-ph
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The categories of this paper are: solv-int
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The categories of this paper are: eess
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The categories of this paper are: q-fin