论文标题
量子控制群集状态
Quantum-controlled cluster states
论文作者
论文摘要
鉴于其对基于测量的量子计算的重要性，量子光学簇状态已越来越多地探索。在这里，我们设置了一种用于生成量子控制群集状态的新方法：泵送具有空间结构光的光学参数振荡器。我们表明，通过结构化轻泵改善了在光谱和时间域中产生簇的最新技术，该泵在参数相互作用中操纵空间模式耦合。我们说明了考虑二阶泵结构的方法，并表明简单的模式旋转产生了不同的群集状态，包括但不限于二维正方形和六边形晶格。我们还引入了一种新颖的技术来生成非均匀的集群状态，并为其实施提出了一个简单的设置。
Quantum optical cluster states have been increasingly explored, in the light of their importance for measurement-based quantum computing. Here we set forth a new method for generating quantum controlled cluster states: pumping an optical parametric oscillator with spatially structured light. We show that state-of-the-art techniques for producing clusters in the spectral and temporal domains are improved by a structured light pump, which manipulates the spatial mode couplings in the parametric interaction. We illustrate the method considering a second-order pump structure, and show that a simple mode rotation yields different cluster states, including, but not limited to the two-dimensional square and hexagonal lattices. We also introduce a novel technique for generating non-uniform cluster states, and propose a simple setup for its implementation.
