Entanglement witnesses and separability criteria based on generalized equiangular tight frames

Abstract In quantum information theory, measurements are represented by positive, operator-valued measures. In this paper, we use the operators corresponding to generalized equiangular measurements to construct positive maps. Their positivity follows from the properties of index of coincidence for f...

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Bibliographic Details
Main Author: Katarzyna Siudzińska
Format: Article
Language:English
Published: Nature Portfolio 2025-08-01
Series:Scientific Reports
Online Access:https://doi.org/10.1038/s41598-025-13403-7
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