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arXiv 0902.4506quant-ph
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级联容错量子码的最优纠错

Optimal correction of concatenated fault-tolerant quantum codes

Zachary W. E. Evans, Ashley M. Stephens

摘要:

我们提出了一种级联量子纠错的方法,其中改进的经典处理与现有的量子码和容错电路,以更可靠地纠正错误。我们的方法不是独立地纠正级联码的每个级别,而是使用有关在较低级别发生错误的可能性的信息,以最大限度地提高正确解释错误综合征的概率。将该方法应用于[[4,1,2]]子系统码的仿真结果表明,该方法可以纠正多个离散错误,最多可纠正级联码距离的一半,这是最优的。

英文摘要:

We present a method of concatenated quantum error correction in which improved classical processing is used with existing quantum codes and fault-tolerant circuits to more reliably correct errors. Rather than correcting each level of a concatenated code independently, our method uses information about the likelihood of errors having occurred at lower levels to maximize the probability of correctly interpreting error syndromes. Results of simulations of our method applied to the [[4,1,2]] subsystem code indicate that it can correct a number of discrete errors up to half of the distance of the concatenated code, which is optimal.

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。

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