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arXiv 1010.0104quant-ph
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容错体系结构中幻态的催化与激活

Catalysis and activation of magic states in fault tolerant architectures

Earl T. Campbell

摘要:

在许多用于容错量子计算的架构中,通用性通过Clifford群酉算子和准备合适的非稳定态(所谓的魔态)的组合来实现。普适性是可能的,甚至对于一些相当嘈杂的非稳定态,因为蒸馏可以将许多嘈杂的副本转化为更少的纯幻态。在这里,我们提出了新的协议,利用多种神奇的状态,在令人惊讶的方式。这些协议提供了以前未观察到的现象的例子,类似于纠缠理论中众所周知的催化和激活。

英文摘要:

In many architectures for fault tolerant quantum computing universality is achieved by a combination of Clifford group unitary operators and preparation of suitable nonstabilizer states, the so-called magic states. Universality is possible even for some fairly noisy nonstabilizer states, as distillation can convert many noisy copies into fewer purer magic states. Here we propose novel protocols that exploit multiple species of magic states in surprising ways. These protocols provide examples of previously unobserved phenomena that are analogous to catalysis and activation well known in entanglement theory.

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