论文标题
离散时间量子步行中的Borromean国家
Borromean states in discrete-time quantum walks
论文作者
论文摘要
在正确的条件下，从多部分结合状态中删除一个粒子可以使其崩溃。最近在埃菲莫夫州进行了实验证明，此功能被称为“硼属”。人们可以期望这种特殊的行为应与存在强粒子间相关性的存在有关。但是，这种联系的任何探索都受到展示硼属特性的物理系统的复杂性的阻碍。为了克服这个问题，我们基于许多相互作用粒子的离散时间量子步行引入了一个简单的动态玩具模型。我们表明，它所描述的颗粒需要表现出Greenberger-Horne-Zhillinger（GHz）纠缠以形成硼or的结合状态。由于这种类型的纠缠非常容易出现粒子损失，因此我们的工作表明了系统的相关性与硼型性质之间的直观联系。此外，我们在复合颗粒的形成背景下讨论了我们的发现。
In the right conditions, removing one particle from a multipartite bound state can make it fall apart. This feature, known as the "Borromean property", has been recently demonstrated experimentally in Efimov states. One could expect that such peculiar behavior should be linked with the presence of strong inter-particle correlations. However, any exploration of this connection is hindered by the complexity of the physical systems exhibiting the Borromean property. To overcome this problem, we introduce a simple dynamical toy model based on a discrete-time quantum walk of many interacting particles. We show that the particles described by it need to exhibit the Greenberger-Horne-Zeillinger (GHZ) entanglement to form Borromean bound states. As this type of entanglement is very prone to particle losses, our work demonstrates an intuitive link between correlations and Borromean properties of the system. Moreover, we discuss our findings in the context of the formation of composite particles.
