提出了一类新的量子稳定子码的构造方法.寻找量子稳定子码的问题可以转化为寻找GF(4)上迹内积自正交的经典加码的问题.利用这一联系,提出了GF(4)上的经典常数循环码满足迹内积自正交的充要条件,从而构造出了对应的量子常数循环码.最后给出了该类码的一些例子,特别是利用该方法可以构造出量子汉明码.常见的量子循环码实际上是量子常数循环码的一个子类.
A new class of quantum stabilizer codes is presented. The problem of finding stabilizer quantum-error-correcting codes can be transformed into the problem of finding additive self-orthogonal codes over the Galois field GF(4) under a trace inner product. Based on this connection, one method for constructing quantum constacyclic codes is presented by finding self-orthogonal classical constacyclic codes over the field GF (4) under a trace inner product. Finally, some examples are given. As an application of this method, quantum Hamming codes are constructed. This class of quantum codes includes well-known quantum cyclic codes.