Simple proof of the quantum benchmark fidelity for continuous-variable quantum devices
Quantum Physics
2011-04-25 v1
Abstract
An experimental success criterion for continuous-variable quantum teleportation and memories is to surpass a limit of the average fidelity achieved by the classical measure-and-prepare schemes with respect to a Gaussian distributed set of coherent states. We present a simple proof of the classical limit based on the familiar notions of the state-channel duality and the partial transposition. The present method enables us to produce a quantum-domain criterion associated with a given set of measured fidelities.
Cite
@article{arxiv.1104.1017,
title = {Simple proof of the quantum benchmark fidelity for continuous-variable quantum devices},
author = {Ryo Namiki},
journal= {arXiv preprint arXiv:1104.1017},
year = {2011}
}