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Journal of Applied Mathematics and Computing

$$\pmb {{\mathbb {F}}}_q$$-Linear skew cyclic codes over $$\pmb {{\mathbb {F}}}_{q^2}$$ and their applications of quantum codes construction

Yun Gao, Jian Gao, Shilin Yang, Fang‐Wei Fu

Published Mar 29, 2021• 0 citations
Publisher
DOI
10.1007/s12190-020-01479-5

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FqR\mathbb{F}_q\mathcal{R}Fq​R-skew cyclic codes and their application to quantum codes
Let ppp be a prime and Fq\mathbb{F}_qFq​ be the finite field of order q=pmq=p^mq=pm. In this paper, we study FqR\mathbb{F}_q\mathcal{R}Fq​R-skew cyclic codes where R=Fq+uFq\mathcal{R}=\mathbb{F}_q+u\mathbb{F}_qR=Fq​+uFq​ with u2=uu^2=uu2=u. To characterize FqR\mathbb{F}_q\mathcal{R}Fq​R-skew cyclic codes, we first establish their algebraic structure and then discuss the dual-containing properties by considering a non-degenerate inner product. Further, we define a Gray map over FqR\mathbb{F}_q\mathcal{R}Fq​R and obtain their Fq\mathbb{F}_qFq​-Gray images. As an application, we apply the CSS (Calderbank-Shor-Steane) construction on Gray images of dual containing FqR\mathbb{F}_q\mathcal{R}Fq​R-skew cyclic codes and obtain many quantum codes with better parameters than the best-known codes available in the literature.