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arXiv quant-ph/0608045quant-ph
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量子纠错子系统是酉可恢复子系统

Quantum Error Correcting Subsystems are Unitarily Recoverable Subsystems

David W. Kribs, Robert W. Spekkens

摘要:

我们表明,每个可校正的子系统的任意噪声操作可以恢复由一个单一的操作,恢复的概念是更宽松的概念比校正,因为它不保护子系统从后续迭代的噪声。我们还表明,在单位噪声操作的情况下,可以确定一个子集的所有可校正的子系统-那些可以通过一个单一的单一的操作-作为无噪声子系统的噪声操作与其对偶的组成。使用最近发展的无噪声子系统的结构理论,这种酉可校正的子系统的识别减少到一个代数练习。

英文摘要:

We show that every correctable subsystem for an arbitrary noise operation can be recovered by a unitary operation, where the notion of recovery is more relaxed than the notion of correction insofar as it does not protect the subsystem from subsequent iterations of the noise. We also demonstrate that in the case of unital noise operations one can identify a subset of all correctable subsystems -- those that can be corrected by a single unitary operation -- as the noiseless subsystems for the composition of the noise operation with its dual. Using the recently developed structure theory for noiseless subsystems, the identification of such unitarily correctable subsystems is reduced to an algebraic exercise.

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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