A brief note on the Scott measure as a multipartite entanglement criterion. (28th May 2020)

• Record Type: Journal Article
• Authors: Haddadi, Saeed
• Is Part Of: Laser physics letters. Volume 17:Number 7(2020:Jul.)
• Publication Date: 2020-05-28
• Subjects: Scott measure -- multipartite entanglement -- qudit system; Lasers -- Periodicals; Physics -- Periodicals; 621.366
• DOI: 10.1088/1612-202X/ab8fab
• Languages: English
• ISSNs: 1612-2011

Abstract

Abstract: 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 Q 2 > Q 3 . 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.