Does "quantum nonlocality without entanglement" have quantum origin?
Quantum Physics
2013-03-07 v1
Abstract
Quantum separable operations are defined as those that cannot produce entanglement from separable states, and it is known that they strictly surpass local operations and classical communication (LOCC) in a number of tasks, which is sometimes referred to as "quantum nonlocality without entanglement." Here we consider a task with such a gap regarding the trade-off between state discrimination and preservation of entanglement. We show that this task along with the gap has an analogue in a purely classical setup, indicating that the quantum properties are not essential in the existence of a nonzero gap between the separable operations and LOCC.
Cite
@article{arxiv.1303.1269,
title = {Does "quantum nonlocality without entanglement" have quantum origin?},
author = {Masato Koashi and Koji Azuma and Shinya Nakamura and Nobuyuki Imoto},
journal= {arXiv preprint arXiv:1303.1269},
year = {2013}
}
Comments
5 pages, 2 figures