PreprintarXiv licencearXiv
Fourier imaging of collective spontaneous emission modes in superradiant cold atomic clouds
Abstract
We measure the spatial pattern associated with the superradiant emission from a cloud of cold 87Rb atoms using Fourier imaging. We observe a highly directional, ring-shaped emission structure, which corresponds to a single collective jump operator associated to the most superradiant mode of the ensemble. Using spatial filtering, we isolate this channel and find the typical superradiant burst with superlinear scaling of the intensity with atom number. We compare our results to two models that describe the competition between the various decay channels, finding good agreement. Our work shows that the collective jump operators introduced by Carmichael et al. [Optics Communications 179, 417 (2000)] can be measured and manipulated.
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BibTeX
@misc{gavalda2026fourier,
title = {{Fourier imaging of collective spontaneous emission modes in superradiant cold atomic clouds}},
author = {Adrien Gavalda and Guillaume Tremblier and Martin Poitrinal and Sara Pancaldi and Antoine Browaeys and Igor Ferrier-Barbut},
howpublished = {arXiv},
year = {2026},
month = oct,
doi = {10.48550/arxiv.2607.08421},
eprint = {2607.08421},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2607.08421},
}
RIS
TY - UNPB
TI - Fourier imaging of collective spontaneous emission modes in superradiant cold atomic clouds
AU - Adrien Gavalda
AU - Guillaume Tremblier
AU - Martin Poitrinal
AU - Sara Pancaldi
AU - Antoine Browaeys
AU - Igor Ferrier-Barbut
PY - 2026
DA - 2026/10/19
PB - arXiv
DO - 10.48550/arxiv.2607.08421
UR - https://arxiv.org/abs/2607.08421
AB - We measure the spatial pattern associated with the superradiant emission from a cloud of cold 87Rb atoms using Fourier imaging. We observe a highly directional, ring-shaped emission structure, which corresponds to a single collective jump operator associated to the most superradiant mode of the ensemble. Using spatial filtering, we isolate this channel and find the typical superradiant burst with superlinear scaling of the intensity with atom number. We compare our results to two models that describe the competition between the various decay channels, finding good agreement. Our work shows that the collective jump operators introduced by Carmichael et al. [Optics Communications 179, 417 (2000)] can be measured and manipulated.
ER -