Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Quantum error avoiding codes versus quantum error correcting codes   A general theory of quantum error avoiding codes is established, and new
light is shed on the relation between quantum error avoiding and correcting
codes. Quantum error avoiding codes are found to be a special type of highly
degenerate quantum error correcting codes. A combination of the ideas of
correcting and avoiding quantum errors may yield better codes. We give a
practical example.

6
The categories of this paper are: astro-ph
26
The categories of this paper are: bayes-an
32
The categories of this paper are: atom-ph
34
The categories of this paper are: chem-ph
27
The categories of this paper are: comp-gas
15
The categories of this paper are: nucl-ex
24
The categories of this paper are: dg-ga
17
The categories of this paper are: q-fin
18
The categories of this paper are: econ
11
The categories of this paper are: hep-lat
25
The categories of this paper are: patt-sol
37
The categories of this paper are: supr-con
14
The categories of this paper are: math-ph
35
The categories of this paper are: mtrl-th
33
The categories of this paper are: plasm-ph
21
The categories of this paper are: adap-org