Castellucci, F., Clark, T. W., Selyem, A., Wang, J. and Franke-Arnold, S. (2021) Atomic compass: detecting 3D magnetic field alignment with vector vortex light. Physical Review Letters, 127(23), 233202. (doi: 10.1103/PhysRevLett.127.233202)
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Abstract
We describe and demonstrate how 3D magnetic field alignment can be inferred from single absorption images of an atomic cloud. While optically pumped magnetometers conventionally rely on temporal measurement of the Larmor precession of atomic dipoles, here a cold atomic vapor provides a spatial interface between vector light and external magnetic fields. Using a vector vortex beam, we inscribe structured atomic spin polarization in a cloud of cold rubidium atoms and record images of the resulting absorption patterns. The polar angle of an external magnetic field can then be deduced with spatial Fourier analysis. This effect presents an alternative concept for detecting magnetic vector fields and demonstrates, more generally, how introducing spatial phases between atomic energy levels can translate transient effects to the spatial domain.
| Item Type: | Articles |
|---|---|
| Status: | Published |
| Refereed: | Yes |
| Glasgow Author(s) Enlighten ID: | Selyem, Adam and Franke-Arnold, Professor Sonja and Castellucci, Dr Francesco and Wang, Jinwen and Clark, Thomas |
| Authors: | Castellucci, F., Clark, T. W., Selyem, A., Wang, J., and Franke-Arnold, S. |
| College/School: | College of Science and Engineering > School of Physics and Astronomy |
| Journal Name: | Physical Review Letters |
| Publisher: | American Physical Society |
| ISSN: | 0031-9007 |
| ISSN (Online): | 1079-7114 |
| Published Online: | 30 November 2021 |
| Copyright Holders: | Copyright © 2021 American Physical Society |
| First Published: | First published in Physical Review Letters 127(23): 233202 |
| Publisher Policy: | Reproduced in accordance with the publisher copyright policy |
| Related URLs: | |
| Data DOI: | 10.5525/gla.researchdata.1203 |
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