论文标题
自发性参数非排效三量生成的非高斯性质和纠缠
Non-Gaussian Nature and Entanglement of Spontaneous Parametric Nondegenerate Triple-Photon Generation
论文作者
论文摘要
如何准备确定性的非高斯纠缠状态是连续变化的量子信息技术的基本问题。在这里，我们从理论上通过数值方法证明了三个光子自发参数下调产生的三个光子状态是非高斯纠缠的纯超高斯资源。有趣的是，三个光子状态模式之间的纠缠程度要强，比对应于具有相同参数的二次汉密尔顿人产生的两种模式挤压真空状态的纠缠程度。此外，我们提出了一个模型，以基于正交投影测量值制备具有可调节性的两种非高斯纠缠状态。
How to prepare deterministically non-Gaussian entangled states is a fundamental question for continuous-variable quantum information technology. Here, we theoretically demonstrate through numerical methods that the triple-photon state generated by three-photon spontaneous parametric down-conversion is a pure super-Gaussian resource of non-Gaussian entanglement. Interestingly, the degree of entanglement between the modes of the triple-photon state is stronger than that corresponding to the two-mode squeezed vacuum state produced by a quadratic Hamiltonian with the same parameters. Furthermore, we propose a model to prepare two-mode non-Gaussian entangled states with tunable non-Gaussianity based on quadrature projection measurements.
