论文标题
从单个三阶参数下转换过程中发出的六个光子纠缠状态
On six-photon entangled state emitted from a single third-order parametric down-conversion process
论文作者
论文摘要
我们考虑从单个三阶参数下转换过程中发出的六个光子纠缠状态。在弱非线性的状态下，我们提出了一种对称检测器，该检测器能够分析双束六光子对称态。通过将对称探测器级联作为应用，可以表明可以从任意的双束六光子对称状态中净化所需的六个光子纠缠状态。使用线性光学元件，我们提出了一种富有成果的方案，用于探索三阶参数下转换过程中的一类多模词纠缠状态。此外，我们提供了一种基于线性光学和弱非线性的六个光子极化纠结的Greenberger-Horne-Zeilinger状态的方法。
We consider six-photon entangled state emitted from a single third-order parametric down-conversion process. In the regime of weak nonlinearities, we present a symmetry detector which is capable of analyzing the twin-beam six-photon symmetric states. By cascading the symmetry detectors, as an application, it is shown that one can purify the desired six-photon entangled state from an arbitrary twin-beam six-photon symmetric state. With linear optics we propose a fruitful scheme for exploring a class of multimode-photon entangled states from third-order parametric down-conversion process. Furthermore, we provide a method to generate the six-photon polarization entangled Greenberger-Horne-Zeilinger state based on linear optics and weak nonlinearities.
