We propose a post-processing method for message-passing (MP) decoding of CSS quantum LDPC codes, called stabilizer-inactivation (SI). It relies on inactivating a set of qubits, supporting a check in the dual code, and then running the MP decoding again. This allows MP decoding to converge outside the inactivated set of qubits, while the error on these is determined by solving a small, constant size, linear system. Compared to the state of the art post-processing method based on ordered statistics decoding (OSD), we show through numerical simulations that MP-SI outperforms MP-OSD for different quantum LDPC code constructions, different MP decoding algorithms, and different MP scheduling strategies, while having a significantly reduced complexity.

翻译：我们建议了一种用于电文传递的后处理方法(MP)解码 CSS 量子LDPC 代码(称为稳定器-不活动代码(SI) ) 的后处理方法。 它依靠的是停止激活一组quits, 支持对双代码的检查, 然后再次运行 MP 解码 。 这样可以让 MP 解码在不活跃的 qubits 数据集之外集合, 而这些编码的错误是通过解决一个小的、 恒定的线性系统来确定的。 与基于定购的解码( OSD) 的先进后处理方法相比, 我们通过数字模拟显示 MP- SI 超过 MP- OSD, 用于不同的量子 LDPC 代码构造、 不同的MP 解码算法和不同的MP 列表战略, 而复杂性则大大降低 。</s>