Weak measurements and the joint estimation of phase and phase diffusion
Quantum Physics
2015-10-05 v1
Abstract
Weak measurements offer the possibility of tuning the information acquired on a system, hence the imposed disturbance. This suggests that it could be a useful tool for multi-parameter estimation, when two parameters can not be measured simultaneously at the quantum limit. Here we discuss their use for phase estimation in the presence of phase diffusion in the context of polarimetry, a scenario which is conveniently cast in terms of a two-level quantum system in many relevant cases.
Cite
@article{arxiv.1510.00543,
title = {Weak measurements and the joint estimation of phase and phase diffusion},
author = {Matteo Altorio and Marco G. Genoni and Mihai D. Vidrighin and Fabrizia Somma and Marco Barbieri},
journal= {arXiv preprint arXiv:1510.00543},
year = {2015}
}