Uncertainty Relation Revisited from Quantum Estimation Theory
Quantum Physics
2013-05-29 v4
Abstract
By invoking quantum estimation theory we formulate bounds of errors in quantum measurement for arbitrary quantum states and observables in a finite-dimensional Hilbert space. We prove that the measurement errors of two observables satisfy Heisenberg's uncertainty relation, find the attainable bound, and provide a strategy to achieve it.
Cite
@article{arxiv.1010.3571,
title = {Uncertainty Relation Revisited from Quantum Estimation Theory},
author = {Yu Watanabe and Takahiro Sagawa and Masahito Ueda},
journal= {arXiv preprint arXiv:1010.3571},
year = {2013}
}
Comments
manuscript including 4 pages and 2 figures