Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Comment on "Dense coding in entangled states"   In a recent Brief Report, Lee et al. [L. Lee, D. Ahn, and S.W. Hwang, Phys.
Rev. A 66, 024304 (2002)] have claimed that using pairwise entangled qubits
gives rise to an exponentially more efficient dense coding when two parties are
involved than using maximally entangled qubits shared among N parties. Here, we
show that their claim is not true.

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The categories of this paper are: astro-ph
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The categories of this paper are: mtrl-th
16
The categories of this paper are: stat
10
The categories of this paper are: q-bio
28
The categories of this paper are: alg-geom
11
The categories of this paper are: hep-lat
32
The categories of this paper are: atom-ph
12
The categories of this paper are: nucl-th
30
The categories of this paper are: q-alg
34
The categories of this paper are: chem-ph
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The categories of this paper are: acc-phys
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The categories of this paper are: econ
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The categories of this paper are: cond-mat
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The categories of this paper are: nlin
31
The categories of this paper are: ao-sci
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The categories of this paper are: comp-gas