二元加法共轭循环码：迹对应及其在量子码中的应用
Additive Conjucyclic Codes over $\F_{q^2}$: Trace Correspondence and Applications to Quantum Codes
AI总结：
本文通过建立迹基的线性同构，将二元加法共轭循环码与二元线性循环码联系起来，从而统一并推广了之前关于四元加法共轭循环码的研究，并提出从加法共轭循环码构造q-ary量子纠错码的方法。
摘要：
本文通过建立迹基的线性同构，将二元加法共轭循环码与二元线性循环码联系起来，从而统一并推广了之前关于四元加法共轭循环码的研究，并提出从加法共轭循环码构造q-ary量子纠错码的方法。
英文摘要：
Additive conjucyclic codes over $\F_{q^2}$ are closed under the conjugated cyclic shift and play an important role in constructing quantum error-correcting codes (QECCs). However, a systematic algebraic theory for such codes over general finite fields has been lacking. In this paper, we develop a unified framework by establishing a trace-based $\F_q$-linear isomorphism between $\F_{q^2}^n$ and $\F_q^{2n}$. This correspondence shows that additive conjucyclic codes of length $n$ correspond bijectively to $q$-ary linear cyclic codes of length $2n$, translating their structural analysis to the well-understood setting of cyclic codes. Using this isomorphism, we determine the enumeration of such codes and give explicit forms of their generator matrices. We then introduce an alternating inner product on $\F_{q^2}^n$, which is shown to be compatible with the symplectic inner product on $\F_q^{2n}$ under the trace isomorphism. Based on this inner product, we characterize the dual-containing condition for additive conjucyclic codes and derive explicit parity-check matrices. Finally, we construct $q$-ary QECCs from dual-containing additive conjucyclic codes. Our results unify and generalize previous studies on quaternary additive conjucyclic codes and present a construction method for $q$-ary QECCs from additive conjucyclic codes, together with an illustrative example.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
