We propose and fully analyze the simplest technique to date (to our knowledge) for generating light-based universal quantum computing resources, namely, 2D, 3D, and $n$-hypercubic cluster states in general. The technique uses two standard optical components: first, a single optical parametric oscillator pumped below threshold by a monochromatic field, which generates Einstein–Podolsky–Rosen entangled states, a.k.a. two-mode squeezed states, over the quantum optical frequency comb; second, phase modulation at frequencies that are multiples of the comb spacing (via RF or optical means). The compactness of this technique paves the way to implementing quantum computing on chip using quantum nanophotonics.

中文翻译：

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调相量子光学频率梳中的超立方簇态

我们提出并充分分析了迄今为止（据我们所知）最简单的技术，用于生成基于光的通用量子计算资源，即2D，3D和$ n $超立方簇状态。该技术使用两个标准的光学组件：首先，一个单色光学场将单个光学参量振荡器泵浦到阈值以下，在量子光学频率梳上产生爱因斯坦-波多尔斯基-罗森纠缠态，也就是双模压缩态。第二，以梳状间隔的倍数的频率进行相位调制（通过射频或光学手段）。该技术的紧凑性为使用量子纳米光子学在芯片上实现量子计算铺平了道路。