Probing the quantumness of channels with mixed states
Quantum Physics
2009-10-09 v2
Abstract
We present an alternative approach to the derivation of benchmarks for quantum channels, such as memory or teleportation channels. Using the concept of effective entanglement and the verification thereof, a testing procedure is derived which demands very few experimental resources. The procedure is generalized by allowing for mixed test states. By constructing optimized measure & re-prepare channels, the benchmarks are found to be very tight in the considered experimental regimes.
Keywords
Cite
@article{arxiv.0907.0699,
title = {Probing the quantumness of channels with mixed states},
author = {Hauke Häseler and Norbert Lütkenhaus},
journal= {arXiv preprint arXiv:0907.0699},
year = {2009}
}
Comments
11 Pages, 9 Figures, published version