Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Robust construction of entangled coherent GHZ and W states in a cavity
  QED system   By exploiting a system of three distant cavities, we propose a scheme for
constructing tripartite entangled coherent GHZ and W states which are robust
due to the photon losses in the cavities. Each of cavities is doped with a
semiconductor quantum dot. By the dynamics, the excitonic modes of quantum dots
are enabled to exhibit entan-gled coherent GHZ and W states. Apart from the
exciton losses, the master equation approach shows that when the populations of
the field modes in the cavities are negli-gible the destruction of entanglement
due to decoherence arises from photon losses, is effectively suppressed.

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The categories of this paper are: chem-ph
7
The categories of this paper are: hep-th
12
The categories of this paper are: nucl-th
1
The categories of this paper are: cs
8
The categories of this paper are: hep-ex
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The categories of this paper are: dg-ga
22
The categories of this paper are: chao-dyn
14
The categories of this paper are: math-ph
23
The categories of this paper are: solv-int
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The categories of this paper are: cmp-lg
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The categories of this paper are: eess
2
The categories of this paper are: math
17
The categories of this paper are: q-fin
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The categories of this paper are: bayes-an
27
The categories of this paper are: comp-gas
37
The categories of this paper are: supr-con