Detecting k -nonstretchability via a class of informationally complete symmetric measurements
Abstract
Abstract Characterizing multipartite entanglement is a fundamental problem in quantum information theory. The concept of k -stretchability provides a framework for characterizing the structure of multipartite entanglement. We investigate k -nonstretchability using informationally complete ( s , t ) -positive operator-valued measures ( ( s , t ) -POVMs) informationally complete ( s , t ) -positive operator-valued measures ( ( s , t ) -POVMs) and derive two families of criteria. These criteria identify classes of k -nonstretchable states, and we demonstrate their applicability and advantages through explicit examples.
Fields of Study & Subjects
Face and Expression Recognition
Industrial Vision Systems and Defect Detection
Advanced Statistical Methods and Models
Publication details
- Journal / source
- Journal of Physics A Mathematical and Theoretical
- Publisher
- IOP Publishing
- Volume
- 59
- Issue
- 30
- Pages
- 305305–305305
- Publication date
- 17 July 2026
- Language
- EN