Local uncertainty relations serving as measures of entanglement in a bipartite two-level system
Quantum Physics
2016-08-16 v1
Abstract
We comment on the recent suggestion to use a family of local uncertainty relations as a standard way of quantifying entanglement in two-qubit systems. Some statements made on the applicability of the proposed "measures" are overly optimistic. We exemplify how these specific "measures" fall short, and present a minor modification of the general theory which uses the same experimentally gathered information, but in a slightly different, better way.
Cite
@article{arxiv.quant-ph/0508235,
title = {Local uncertainty relations serving as measures of entanglement in a bipartite two-level system},
author = {Simon Samuelsson and Gunnar Björk},
journal= {arXiv preprint arXiv:quant-ph/0508235},
year = {2016}
}
Comments
5 pages, 1 figure