Classical cyclic and constacyclic codes play a fundamental role in coding theory thanks to their rich algebraic structures and efficient encoding/decoding algorithms. These codes are especially important in the construction of quantum error-correcting codes, since their inherent algebraic properties facilitate the derivation of self-orthogonality or dual-containing conditions that are crucial for ensuring quantum error correction capability. In this paper, we construct entanglement-assisted quantum error-correcting codes (EAQEC codes) of length 5p t over 𝔽 p m . We compare our EAQEC codes with all known EAQEC codes to see that our EAQEC codes are new in the sense that their parameters are different from all the previous constructions. Moreover, our EAQEC codes have shorter lengths than the known codes, yet exhibit significantly larger quantum distances. This is highly meaningful in the context of quantum error correction, as it enables the construction of codes with small lengths while maintaining large quantum distances. We also construct asymmetric entanglement-assisted quantum error-correcting (AEAQEC) codes of length 5p t over 𝔽 p m . We evaluate our AEAQEC codes against all existing ones and find that they are both new and better.
Dinh et al. (Fri,) studied this question.
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