Post-selected weak measurement beyond the weak value
Quantum Physics
2010-04-14 v4
Abstract
Closed expressions are derived for the quantum measurement statistics of pre-and postselected gaussian particle beams. The weakness of the pre-selection step is shown to compete with the non-orthogonality of post-selection in a transparent way. The approach is shown to be useful in analyzing post-selection-based signal amplification, allowing measurements to be extended far beyond the range of validity of the well-known Aharonov-Albert-Vaidman limit.
Cite
@article{arxiv.0909.2206,
title = {Post-selected weak measurement beyond the weak value},
author = {Tamas Geszti},
journal= {arXiv preprint arXiv:0909.2206},
year = {2010}
}
Comments
The published version; with respect to previous one, note changes in Eqs. (16),(17),(19).