Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Experimentally Witnessing the Quantumness of Correlations   The quantification of quantum correlations (other than entanglement) usually
entails laboured numerical optimization procedures also demanding quantum state
tomographic methods. Thus it is interesting to have a laboratory friendly
witness for the nature of correlations. In this Letter we report a direct
experimental implementation of such a witness in a room temperature nuclear
magnetic resonance system. In our experiment the nature of correlations is
revealed by performing only few local magnetization measurements. We also
compare the witness results with those for the symmetric quantum discord and we
obtained a fairly good agreement.

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The categories of this paper are: cond-mat
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The categories of this paper are: hep-lat
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The categories of this paper are: adap-org
26
The categories of this paper are: bayes-an
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The categories of this paper are: acc-phys
29
The categories of this paper are: funct-an
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The categories of this paper are: hep-th
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The categories of this paper are: hep-ph
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The categories of this paper are: cs
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The categories of this paper are: ao-sci
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The categories of this paper are: solv-int
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The categories of this paper are: gr-qc
30
The categories of this paper are: q-alg
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The categories of this paper are: nlin
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The categories of this paper are: alg-geom
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The categories of this paper are: patt-sol