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Spatially-selective in situ magnetometry of ultracold atomic clouds

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journal contribution
posted on 2023-06-09, 17:13 authored by Ottó Elíasson, Robert Heck, Jens Schultz Lausten, Mario Napolitano, Romain Müller, Jan Arlt, Jacob F Sherson, Mark Bason
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.

Funding

Meredith Hanmer: Marie Curie IEF (Angela Adreani); G1366; EUROPEAN UNION; PIEF-GA-2012-327060

History

Publication status

  • Published

File Version

  • Accepted version

Journal

Journal of Physics B: Atomic, Molecular and Optical Physics

ISSN

0953-4075

Publisher

IOP Publishing

Department affiliated with

  • Physics and Astronomy Publications

Research groups affiliated with

  • Experimental Particle Physics Research Group Publications

Full text available

  • Yes

Peer reviewed?

  • Yes

Legacy Posted Date

2019-03-12

First Open Access (FOA) Date

2020-03-01

First Compliant Deposit (FCD) Date

2019-03-11

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