Remarks on Lewenstein-Sanpera Decomposition
Quantum Physics
2009-11-06 v1
Abstract
We discuss in this letter Lewenstein-Sanpera (L-S) decomposition for a specific Werner state. Compared with the optimal case, we propose a quasi-optimal one which in the view of concurrence leads to the same entanglement measure for the entangled mixed state discussed. We think that in order to obtain entanglement of given state the optimal L-S decomposition is not necessary.
Cite
@article{arxiv.quant-ph/0012145,
title = {Remarks on Lewenstein-Sanpera Decomposition},
author = {Mingjun Shi and Jiangfeng Du},
journal= {arXiv preprint arXiv:quant-ph/0012145},
year = {2009}
}