Entanglement, detection, and geometry of non-classical States
Quantum Physics
2010-10-12 v3
Abstract
Non-classical states that are characterized by their non-positive quasi-probabilities in phase space are known to be the basis for various quantum effects. In this work, we investigate the interrelation between the non-classicality and entanglement, and then characterize the non-classicality that precisely corresponds to entanglement. The results naturally follow from two findings: one is the general structure among non-classical, entangled, separable, and classical states over Hermitian operators, and the other a general scheme to detect non-classical states.
Cite
@article{arxiv.0903.0713,
title = {Entanglement, detection, and geometry of non-classical States},
author = {Kisik Kim and Jaewan Kim and Joonwoo Bae},
journal= {arXiv preprint arXiv:0903.0713},
year = {2010}
}
Comments
5 pages, 3 figures