Remote Parameter Estimation in a Quantum Spin Chain Enhanced by Local Control
Quantum Physics
2017-06-06 v1
Abstract
We study the interplay of control and parameter estimation on a quantum spin chain. A single qubit probe is attached to one end of the chain, while we wish to estimate a parameter on the other end. We find that control on the probe qubit can substantially improve the estimation performance and discover some interesting connections to quantum state transfer.
Cite
@article{arxiv.1701.07399,
title = {Remote Parameter Estimation in a Quantum Spin Chain Enhanced by Local Control},
author = {Jukka Kiukas and Kazuya Yuasa and Daniel Burgarth},
journal= {arXiv preprint arXiv:1701.07399},
year = {2017}
}
Comments
7 pages, 3 figures