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arXiv 2103.01928quant-ph
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小马尔可夫误差的分类

A taxonomy of small Markovian errors

Robin Blume-Kohout, Marcus P. da Silva, Erik Nielsen, Timothy Proctor, Kenneth Rudinger, Mohan Sarovar, Kevin Young

摘要:

量子逻辑门中的错误通常用量子过程矩阵(CPTP映射)来建模。但是过程矩阵可能是不透明的,并且难以操作。我们展示了如何将门的过程矩阵转换为更有用地表示相同信息的错误生成器。我们构建了一个简单的和物理直观的基本错误发生器的基础上,对它们进行分类,并展示了如何将任何门的错误发生器表示为具有各种速率的基本错误发生器的混合物。最后,我们将展示如何建立一个大的各种减少模型的门错误相结合的基本错误发生器和/或整个子部门的发生器空间。最后,我们以简化模型的几个例子作为结论,其中包括一个只有$9N^2$参数的模型,它描述了N量子位处理器上几乎所有常见的预测错误。

英文摘要:

Errors in quantum logic gates are usually modeled by quantum process matrices (CPTP maps). But process matrices can be opaque, and unwieldy. We show how to transform a gate's process matrix into an error generator that represents the same information more usefully. We construct a basis of simple and physically intuitive elementary error generators, classify them, and show how to represent any gate's error generator as a mixture of elementary error generators with various rates. Finally, we show how to build a large variety of reduced models for gate errors by combining elementary error generators and/or entire subsectors of generator space. We conclude with a few examples of reduced models, including one with just $9N^2$ parameters that describes almost all commonly predicted errors on an N-qubit processor.

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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