Qubit and Entanglement assisted Optimal Entanglement Concentration
Quantum Physics
2009-10-31 v4
Abstract
We present two method for optimal entanglement concentration from pure entangled states by local actions only. However a prior knowledge of the Schmidt coefficients is required. The first method is optimally efficient only when a finite ensemble of pure entangled states are available whereas the second method realizes the single pair optimal concentration probability. We also propose an entanglement assisted method which is again optimally efficient even for a single pair. We also discuss concentrating entanglement from N-partite cat like states.
Cite
@article{arxiv.quant-ph/9911013,
title = {Qubit and Entanglement assisted Optimal Entanglement Concentration},
author = {Somshubhro Bandyopadhyay},
journal= {arXiv preprint arXiv:quant-ph/9911013},
year = {2009}
}
Comments
Latex, 12 pages: Enlarged version: To appear in Phys. Rev. A. Changes made: another protocol added, practical implementation of the proposals discussed