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arXiv · 1707.06018

Single-atom transistor as a precise magnetic field sensor

Krzysztof Jachymski·Tomasz Wasak·Zbigniew Idziaszek·Paul S. Julienne·Antonio Negretti·Tommaso Calarco
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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 $10^{-5}$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.

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Krzysztof Jachymski, Tomasz Wasak, Zbigniew Idziaszek, Paul S. Julienne, Antonio Negretti, Tommaso Calarco. 2018-01-04. Single-atom transistor as a precise magnetic field sensor. https://doi.org/10.1103/physrevlett.120.013401

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