Optimal discrimination of quantum operations
Quantum Physics
2009-11-11 v1
Abstract
We address the problem of discriminating with minimal error probability two given quantum operations. We show that the use of entangled input states generally improves the discrimination. For Pauli channels we provide a complete comparison of the optimal strategies where either entangled or unentangled input states are used.
Cite
@article{arxiv.quant-ph/0505183,
title = {Optimal discrimination of quantum operations},
author = {Massimiliano F. Sacchi},
journal= {arXiv preprint arXiv:quant-ph/0505183},
year = {2009}
}
Comments
4 pages, no figures