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Collective atomic scattering and motional effects in a dense coherent medium

Bromley, S.L.; Zhu, B.; Bishof, M.; Zhang, X.; Bothwell, T.; Schachenmayer, J.; Nicholson, T.L.; Kaiser, R.; Yelin, S.F.; Lukin, M.D.; Rey, A.M.; Ye, J.

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Authors

S.L. Bromley

B. Zhu

M. Bishof

X. Zhang

T. Bothwell

J. Schachenmayer

T.L. Nicholson

R. Kaiser

S.F. Yelin

M.D. Lukin

A.M. Rey

J. Ye



Abstract

We investigate collective emission from coherently driven ultracold 88Sr atoms. We perform two sets of experiments using a strong and weak transition that are insensitive and sensitive, respectively, to atomic motion at 1 μK. We observe highly directional forward emission with a peak intensity that is enhanced, for the strong transition, by >103 compared with that in the transverse direction. This is accompanied by substantial broadening of spectral lines. For the weak transition, the forward enhancement is substantially reduced due to motion. Meanwhile, a density-dependent frequency shift of the weak transition (∼10% of the natural linewidth) is observed. In contrast, this shift is suppressed to <1% of the natural linewidth for the strong transition. Along the transverse direction, we observe strong polarization dependences of the fluorescence intensity and line broadening for both transitions. The measurements are reproduced with a theoretical model treating the atoms as coherent, interacting radiating dipoles.

Citation

Bromley, S., Zhu, B., Bishof, M., Zhang, X., Bothwell, T., Schachenmayer, J., …Ye, J. (2016). Collective atomic scattering and motional effects in a dense coherent medium. Nature Communications, 7, Article 11039. https://doi.org/10.1038/ncomms11039

Journal Article Type Article
Acceptance Date Feb 15, 2016
Online Publication Date Mar 17, 2016
Publication Date 2016
Deposit Date Feb 10, 2020
Publicly Available Date Oct 29, 2021
Journal Nature Communications
Publisher Nature Research
Peer Reviewed Peer Reviewed
Volume 7
Article Number 11039
DOI https://doi.org/10.1038/ncomms11039
Related Public URLs https://arxiv.org/abs/1601.05322

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This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/





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