Single-atom transistor as a precise magnetic field sensor
Quantum Physics
2018-01-10 v2 Quantum Gases
Atomic Physics
Abstract
Feshbach resonances, which allow for tuning the interactions of ultracold atoms with an external magnetic field, have been widely used to control the properties of quantum gases. We propose a~scheme for using scattering resonances as a probe for external fields, showing that by carefully tuning the parameters it is possible to reach a G (or nT) level of precision with a single pair of atoms. We show that for our collisional setup it is possible to saturate the quantum precision bound with a simple measurement protocol.
Cite
@article{arxiv.1707.06018,
title = {Single-atom transistor as a precise magnetic field sensor},
author = {Krzysztof Jachymski and Tomasz Wasak and Zbigniew Idziaszek and Paul S. Julienne and Antonio Negretti and Tommaso Calarco},
journal= {arXiv preprint arXiv:1707.06018},
year = {2018}
}