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arXiv 1504.05965quant-ph
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Qutrit魔法状态蒸馏在某些方向上很紧

Qutrit Magic State Distillation Tight in Some Directions

Hillary Dawkins, Mark Howard

摘要:

魔态蒸馏是实现通用容错量子计算的领先方法中的一个关键组成部分,现有的协议适用于量子比特和高维系统。早期的工作集中在确定量子比特协议的可分离状态的区域,但对于d>2的哪些状态可以被提取以及可分离区域的情况知之甚少。在这里,我们专注于d=3,并提出了新的四qutrit蒸馏方案,改进了已知的可分离区域,并实现蒸馏紧到边界的不可分离状态的某些类的状态。作为最近的结果,这意味着有一个家庭的量子态,使普适性,当且仅当他们表现出上下文相对于稳定剂测量。我们还确定了一个新的例程,其不动点是具有最大和负性的幻态,即,它在特定意义上是最大非稳定剂。

英文摘要:

Magic state distillation is a crucial component in the leading approaches to implementing universal fault tolerant quantum computation, with existing protocols for both qubit and higher dimensional systems. Early work focused on determining the region of distillable states for qubit protocols, yet comparatively little is known about which states can be distilled and with what distillable region for d>2. Here we focus on d=3 and present new four-qutrit distillation schemes that improve upon the known distillable region, and achieve distillation tight to the boundary of undistillable states for some classes of state. As a consequence of recent results, this implies that there is a family of quantum states that enable universality if and only if they exhibit contextuality with respect to stabilizer measurements. We also identify a new routine whose fixed point is a magic state with maximal sum-negativity i.e., it is maximally non-stabilizer in a specific sense.

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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