We geometrically examine the entanglement in symmetric multiquibt states using the spin coherent states properties. We employ the Majorana representation to examine how coherent (polarized) and unpolarized states can be represented in the Bloch sphere and subsequently to quantify entanglement in multipartite systems. Entanglement can be viewed as a distance separate two points in Bloch sphere and how this notion can be extended for multipartite states in W class. This provides us with an entanglement measure for [Formula: see text]-states analogue to the notion of Concurrence.

中文翻译：

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对称多量子位态的几何分析和纠缠测量

我们使用自旋相干态特性在几何上检查对称多量子态中的纠缠。我们使用马约拉纳表示来检查如何在布洛赫球体中表示相干（极化）和非极化状态，并随后量化多方系统中的纠缠。纠缠可以看作是布洛赫球中两点之间的距离，以及如何将这个概念扩展到 W 类中的多部分状态。这为我们提供了一种[公式：见文本]状态的纠缠度量，类似于并发的概念。