Spatially-selective in situ magnetometry of ultracold atomic clouds

Elíasson, Ottó, Heck, Robert, Lausten, Jens Schultz, Napolitano, Mario, Müller, Romain, Arlt, Jan, Sherson, Jacob F and Bason, Mark George (2019) Spatially-selective in situ magnetometry of ultracold atomic clouds. Journal of Physics B: Atomic, Molecular and Optical Physics. ISSN 0953-4075

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Abstract

We demonstrate novel implementations of high-precision optical magnetometers which allow for spatially-selective and spatially-resolved in situ measurements using cold atomic clouds. These are realised by using shaped dispersive probe beams combined with spatially-resolved balanced homodyne detection. Two magnetometer sequences are discussed: a vectorial magnetometer, which yields sensitivities two orders of magnitude better compared to a previous realisation and a Larmor magnetometer capable of measuring absolute magnetic fields. We characterise the dependence of single-shot precision on the size of the analysed region for the vectorial magnetometer and provide a lower bound for the measurement precision of magnetic field gradients for the Larmor magnetometer. Finally, we give an outlook on how dynamic trapping potentials combined with selective probing can be used to realise enhanced quantum simulations in quantum gas microscopes.

Item Type: Article
Schools and Departments: School of Mathematical and Physical Sciences > Physics and Astronomy
Research Centres and Groups: Experimental Particle Physics Research Group
Subjects: Q Science > QC Physics
Depositing User: Alice Jackson
Date Deposited: 12 Mar 2019 13:03
Last Modified: 12 Mar 2019 13:03
URI: http://srodev.sussex.ac.uk/id/eprint/82491

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Project NameSussex Project NumberFunderFunder Ref
Meredith Hanmer: Marie Curie IEF (Angela Adreani)G1366EUROPEAN UNIONPIEF-GA-2012-327060