Quantifying quantum invasiveness
Quantum Physics
2019-02-27 v4
Abstract
We propose a resource theory of the quantum invasiveness of general quantum operations, i.e., those defined by quantum channels in Leggett-Garg scenarios. We are then able to compare the resource-theoretic framework of quantum invasiveness to the resource theory of coherence. We also show that the Fisher information is a quantifier of quantum invasiveness. This result allows us to establish a direct connection between the concept of quantum invasiveness and quantum metrology, by exploring the utility of the definition of quantum invasiveness in the context of metrological protocols.
Cite
@article{arxiv.1803.02836,
title = {Quantifying quantum invasiveness},
author = {Saulo V. Moreira and Marcelo Terra Cunha},
journal= {arXiv preprint arXiv:1803.02836},
year = {2019}
}
Comments
Revised version, some substantial changes, to appear in PRA