In recent decades, various multipartite entanglement measures have been proposed by many researchers, with different characteristics. Meanwhile, Scott studied various interesting aspects of multipartite entanglement measures and he has defined a class of related multipartite entanglement measures in an obvious manner. Recently, Jafarpour et al (2015 Int. J. Quantum Inform. 13 1550 047) have calculated the entanglement quantity of a two-dimensional five-site spin system by means of the Scott measure. Their calculation presented . In this note, we would like to point out that in a five-qudit system, Q 2 does not provide a stronger entanglement than Q 3, while there is a simple relation between them.

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关于作为多部纠缠标准的 Scott 测度的简要说明

近几十年来，许多研究人员提出了各种多方纠缠措施，具有不同的特点。同时，Scott 研究了多方纠缠测度的各个有趣方面，并以一种显而易见的方式定义了一类相关的多方纠缠测度。最近，Jafarpour 等人 (2015 Int. J. Quantum Inform. 13 1550 047) 通过 Scott 测量计算了二维五位点自旋系统的纠缠量。他们的计算提出了。在这篇笔记中，我们想指出，在一个五量子比特系统中，Q 2 没有提供比 Q 3 更强的纠缠，但它们之间存在简单的关系。