Enlargement of Calderbank-Shor-Steane quantum codes
- It is shown that a classical error correcting code C = [n, k, d] which contains its dual, C⊥ ⊆ C, and which can be enlarged to C′ = [n, k′ > k + 1, d′], can be converted into a quantum code of parameters [[n, k+k′ -n, min (d, [3d′/2])]]. This is a generalization of a previous construction, it enables many new codes of good efficiency to be discovered. Examples based on classical Bose-Chaudhuri-Hocquenghem (BCH) codes are discussed. © 1999 IEEE.
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