Information-disturbance tradeoff in estimating a maximally entangled state
Quantum Physics
2007-05-23 v1
Abstract
We derive the amount of information retrieved by a quantum measurement in estimating an unknown maximally entangled state, along with the pertaining disturbance on the state itself. The optimal tradeoff between information and disturbance is obtained, and a corresponding optimal measurement is provided.
Cite
@article{arxiv.quant-ph/0605158,
title = {Information-disturbance tradeoff in estimating a maximally entangled state},
author = {Massimiliano F. Sacchi},
journal= {arXiv preprint arXiv:quant-ph/0605158},
year = {2007}
}
Comments
4 pages. Accepted for publication on Physical Review Letters