Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Asymmetric Quantum Codes on Toric Surfaces   Asymmetric quantum error-correcting codes are quantum codes defined over
biased quantum channels: qubit-flip and phase-shift errors may have equal or
different probabilities. The code construction is the Calderbank-Shor-Steane
construction based on two linear codes.
  We present families of toric surfaces, toric codes and associated asymmetric
quantum error-correcting codes.

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The categories of this paper are: econ
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The categories of this paper are: nucl-th
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The categories of this paper are: hep-lat
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The categories of this paper are: astro-ph
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The categories of this paper are: alg-geom
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The categories of this paper are: comp-gas
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The categories of this paper are: chem-ph
4
The categories of this paper are: cond-mat
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The categories of this paper are: plasm-ph
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The categories of this paper are: hep-ex
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The categories of this paper are: adap-org
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The categories of this paper are: dg-ga
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The categories of this paper are: physics
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The categories of this paper are: chao-dyn
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The categories of this paper are: nlin
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The categories of this paper are: math-ph