Entanglement witnesses with local partial ordering
Quantum Physics
2024-09-27 v1
Abstract
We investigate a class of entanglement witnesses where each witness is formulated as a difference of two product observables. These observables are decomposable into positive semidefinite local operators that obey a partial ordering rule defined over all their possible expectation values. We provide a framework to construct these entanglement witnesses along with some examples. We also discuss methods to improve them both linearly and nonlinearly.
Keywords
Cite
@article{arxiv.2409.17689,
title = {Entanglement witnesses with local partial ordering},
author = {Joshua Carlo A. Casapao and Eric A. Galapon},
journal= {arXiv preprint arXiv:2409.17689},
year = {2024}
}
Comments
7 pages, comments are welcome