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arXiv:2505.13810 · Journal of Physics A Mathematical and Theoretical

Detecting k -nonseparability and k -partite entanglement with generalized skew information and mutually unbiased measurements

Xiaofei Qi, Yuyang Pang, Jinchuan Hou

Published Oct 27, 2025• 2 citations
arXivHTMLPDF

Abstract

Abstract Multipartite quantum entanglement, as a core quantum resource, is fundamental to the advancement of quantum science and technology. In multipartite quantum systems, there are two kinds of quantum entanglement: k -nonseparability and k -partite entanglement. In this paper, we propose sufficient criteria for detecting k -nonseparability and k -partite entanglement by using the generalized Wigner–Yanase skew information and mutually unbiased measurements. Examples are given to demonstrate the detection capability and advantages of these criteria. As an application, an example of recognizing the networks by detecting the depth of quantum networks is given.

DOI
10.1088/1751-8121/ae17fb

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