Entanglement witness operator for quantum teleportation
Quantum Physics
2015-05-30 v2
Abstract
The ability of entangled states to act as resource for teleportation is linked to a property of the fully entangled fraction. We show that the set of states with their fully entangled fraction bounded by a threshold value required for performing teleportation is both convex and compact. This feature enables for the existence of hermitian witness operators the measurement of which could distinguish unknown states useful for performing teleportation. We present an example of such a witness operator illustrating it for different classes of states.
Keywords
Cite
@article{arxiv.1108.1493,
title = {Entanglement witness operator for quantum teleportation},
author = {Nirman Ganguly and Satyabrata Adhikari and A. S. Majumdar and Jyotishman Chatterjee},
journal= {arXiv preprint arXiv:1108.1493},
year = {2015}
}
Comments
Minor revisions to match the published version. Accepted for publication in Physical Review Letters