论文标题
光学参数源的明亮GHz样辐射的非古典性
Non-classicality of bright GHZ-like radiation of an optical parametric source
论文作者
论文摘要
随着新兴的可能性通过直接参数生成获得了GHz输入光子的三倍排放，我们在这里研究此类的明亮排放，其中涉及两个三元组，三个三元组等的高阶排放。这样的状态将构成四种模式（两个梁和两种梁和极化）的自然概括。我们有三个发射的光束过程概括的亮GHz状态，a是一个，二，三，依次在GHz纠缠的光子的三元组上的叠加。我们展示了如何避免直接对参数降低转换的通常描述的直接概括有关的技术困难。使用幻象近似，我们将非转化扰动扩展的第一项变成对话序列的元素。这使我们能够研究新的明亮广义GHz状态的非古典性。
With the emerging possibility to obtain emissions of triples of GHZ-entangled photons via a direct parametric generation we study here bright emissions of this kind which involve higher order emissions of two triples, three triples, etc. Such states would constitute a natural generalization of the four mode (two beams plus polarization) squeezed vacuum. We have three beam process of emission generalized bright GHZ states, which a are superpositions of one, two, three, and so on GHZ entangled triples of photons. We show how to avoid technical difficulties related with straight ahead generalization of the usual description of parametric down conversion. Using Pade approximation we turn first terms of the non-converging perturbation expansion into elements of conversing series. This allows us to study non-classicality of the new bright generalized GHZ states.
