Upper Bound on Singlet Fraction of Two Qubit Mixed Entangled States
Quantum Physics
2016-06-14 v2 Information Theory
math.IT
Abstract
We demonstrate the possibility of achieving the maximum possible singlet fraction using a entangled mixed two-qubit state as a resource. For this, we establish a tight upper bound on singlet fraction and show that the maximal singlet fraction obtained in \cite{Verstraete} does not attain the obtained upper bound on the singlet fraction. Interestingly, we found that the required upper bound can in fact be achieved using local filtering operations.
Keywords
Cite
@article{arxiv.1403.6929,
title = {Upper Bound on Singlet Fraction of Two Qubit Mixed Entangled States},
author = {Satyabrata Adhikari and Atul Kumar},
journal= {arXiv preprint arXiv:1403.6929},
year = {2016}
}
Comments
4 pages, 1 figure