Quantum interferometry at zero and finite temperature with two-mode bosonic Josephson junctions
Quantum Gases
2013-03-08 v1 Quantum Physics
Abstract
We analyze phase interferometry realized with a bosonic Josephson junction made of trapped dilute and ultracold atoms. By using a suitable phase sensitivity indicator we study the zero temperature junction states useful to achieve sub shot-noise precisions. Sub shot-noise phase shift sensitivities can be reached even at finite temperature under a suitable choice of the junction state. We infer a scaling law in terms of the size system (that is, the number of particles) for the temperature at which the shot-noise limit is not overcome anymore
Cite
@article{arxiv.1211.5014,
title = {Quantum interferometry at zero and finite temperature with two-mode bosonic Josephson junctions},
author = {G. Mazzarella},
journal= {arXiv preprint arXiv:1211.5014},
year = {2013}
}
Comments
Accepted for publication in International Journal of Quantum Information