论文标题
量子克隆创建的三个派对量子网络
Three Party Quantum Networks Created by Quantum Cloning
论文作者
论文摘要
随着量子技术的进展，量子网络领域已成为重要的研究领域。在过去的几年中，了解量子网络中存在的相关性方面取得了重大进展。在本文中，我们将克隆作为一种前瞻性方法研究，以生成三个方量子网络，可以进一步用于创建较大的网络。我们分析了可以使用克隆转换创建的各种量子网络拓扑。这在纠缠对的可用性有限的情况下将在情况下有用。除此之外，我们集中于通过克隆与独立生成的纠缠对成立的网络相比，将克隆产生的网络从克隆中创建的网络的问题。我们发现，有几种状态无法使用标准方式使用Finner不等式来区分。对于这样的状态，我们提出了针对三角网络现有的罚款不平等的扩展，这取决于网络拓扑的不同，将观察者的数量从三个或六个或六个增加。这考虑了克隆网络中存在的其他相关性。在本文的最后一部分中，我们使用了三方共同信息将克隆的网络与独立源创建的网络区分开，并进一步使用挤压纠缠作为量化量化克隆网络中的依赖量的量度。
With progress in quantum technologies, the field of quantum networks has emerged as an important area of research. In the last few years, there has been substantial progress in understanding the correlations present in quantum networks. In this article, we study cloning as a prospective method to generate three party quantum networks which can be further used to create larger networks. We analyze various quantum network topologies that can be created using cloning transformations. This would be useful in the situations wherever the availability of entangled pairs is limited. In addition to that we focus on the problem of distinguishing networks created by cloning from those which are created by distributing independently generated entangled pairs. We find that there are several states which cannot be distinguished using the Finner inequalities in the standard way. For such states, we propose an extension to the existing Finner inequality for triangle networks by further increasing the number of observers from three to four or six depending on the network topology. This takes into account the additional correlations that exist in the case of cloned networks. In the last part of the article we have used tripartite mutual information to distinguish cloned networks from networks created by independent sources and have further used squashed entanglement as a measure to quantify the amount of dependence in the cloned networks.
