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arXiv 0903.3233quant-ph
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连续变量团簇的量子计算

Quantum Computing with Continuous-Variable Clusters

Mile Gu, Christian Weedbrook, Nicolas C. Menicucci, Timothy C. Ralph, Peter van Loock

摘要:

连续变量的团簇态提供了实现量子计算机的潜在有前途的方法。本文扩展和进一步完善的理论基础和实验实施协议。我们通过光子探测给出了立方相位门的团簇态实现,它与零拍探测一起,促进了通用量子计算。此外,我们描述了通过无源线性光学产生任意图形状态所需的离线压缩资源。最重要的是,我们证明了有普遍的状态,每模式的离线压缩不增加集群的大小。通过引入连续变量图状态的简单表示,分析了图状态在可测条件下的变换和泛连续变量资源状态的存在性。

英文摘要:

Continuous-variable cluster states offer a potentially promising method of implementing a quantum computer. This paper extends and further refines theoretical foundations and protocols for experimental implementation. We give a cluster-state implementation of the cubic phase gate through photon detection, which, together with homodyne detection, facilitates universal quantum computation. In addition, we characterize the offline squeezed resources required to generate an arbitrary graph state through passive linear optics. Most significantly, we prove that there are universal states for which the offline squeezing per mode does not increase with the size of the cluster. Simple representations of continuous-variable graph states are introduced to analyze graph state transformations under measurement and the existence of universal continuous-variable resource states.

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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