A criterion for entanglement in two two-level systems
Quantum Physics
2007-10-09 v1
Abstract
We prove a necessary and sufficient condition for the occurrence of entanglement in two two-level systems, simple enough to be of experimental interest. Our results are illustrated in the context of a spin star system analyzing the exact entanglement evolution of the central couple of spins.
Keywords
Cite
@article{arxiv.0706.4399,
title = {A criterion for entanglement in two two-level systems},
author = {E. Ferraro and A. Napoli and A. Messina},
journal= {arXiv preprint arXiv:0706.4399},
year = {2007}
}