Tailoring Non-Gaussian Continuous-Variable Graph States.

Tailoring Non-Gaussian Continuous-Variable Graph States.
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剪裁非高斯连续变量图状态

DOI:
10.1103/physrevlett.121.220501
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发表时间:
2018
影响因子:
8.6
通讯作者:
N. Treps
N. Treps
中科院分区:
物理与天体物理1区
文献类型:
--
作者:
M. Walschaers;S. Sarkar;V. Parigi;N. Treps

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图态是基于测量的连续变量量子计算的基础。然而,这些状态的实验实现会导致场求积的高斯测量统计,这对获得真正的量子优势构成了障碍。在这封信中,我们提出了模式选择光子加法和减法作为可行的和实验可行的途径,在这样的连续变量图形状态引入非高斯特征。特别是,我们研究了非高斯属性如何在图的顶点之间传播,这使我们能够显示在这种方法中可以实现的控制程度。
Graph states are the backbone of measurement-based continuous-variable quantum computation. However, experimental realizations of these states induce Gaussian measurement statistics for the field quadratures, which poses a barrier to obtain a genuine quantum advantage. In this Letter, we propose mode-selective photon addition and subtraction as viable and experimentally feasible pathways to introduce non-Gaussian features in such continuous-variable graph states. In particular, we investigate how the non-Gaussian properties spread among the vertices of the graph, which allows us to show the degree of control that is achievable in this approach.
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期刊:
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