Using entanglement improves precision of quantum measurements
Quantum Physics
2019-05-15 v1
Abstract
We show how entanglement can be used to improve the estimation of an unknown transformation. Using entanglement is always of benefit, in improving either the precision or the stability of the measurement. Examples relevant for applications are illustrated, for either qubits and continuous variables
Cite
@article{arxiv.quant-ph/0109040,
title = {Using entanglement improves precision of quantum measurements},
author = {G. Mauro D'Ariano and Paoloplacido Lo Presti and Matteo G. A. Paris},
journal= {arXiv preprint arXiv:quant-ph/0109040},
year = {2019}
}