摘要翻译:
我们研究了二维簇态(单向量子计算的通用资源态)制备过程中的量子比特损失对其计算能力的影响。在逾渗阈值以上,我们提出了一个多项式时间算法,该算法使用在原始格大小上最优缩放的资源来集中一个通用的聚类状态。另一方面,在渗流阈值以下,我们证明了缺陷晶格上的单个量子比特测量可以有效地经典模拟。当与计算能力直接相关的缺陷晶格中的纠缠量呈指数变化时,我们在阈值处观察到一个相变。
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英文标题:
《Phase transition of computational power in the resource states for
one-way quantum computation》
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作者:
Daniel E. Browne, Matthew B. Elliott, Steven T. Flammia, Seth T.
Merkel, Akimasa Miyake, Anthony J. Short
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最新提交年份:
2008
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分类信息:
一级分类:Physics 物理学
二级分类:Quantum Physics 量子物理学
分类描述:Description coming soon
描述即将到来
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一级分类:Physics 物理学
二级分类:Statistical Mechanics 统计力学
分类描述:Phase transitions, thermodynamics, field theory, non-equilibrium phenomena, renormalization group and scaling, integrable models, turbulence
相变,热力学,场论,非平衡现象,重整化群和标度,可积模型,湍流
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英文摘要:
We study how heralded qubit losses during the preparation of a two-dimensional cluster state, a universal resource state for one-way quantum computation, affect its computational power. Above the percolation threshold we present a polynomial-time algorithm that concentrates a universal cluster state, using resources that scale optimally in the size of the original lattice. On the other hand, below the percolation threshold, we show that single qubit measurements on the faulty lattice can be efficiently simulated classically. We observe a phase transition at the threshold when the amount of entanglement in the faulty lattice directly relevant to the computational power changes exponentially.
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PDF链接:
https://arxiv.org/pdf/709.1729


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