Observation of Light-Induced Dipole-Dipole Forces in Ultracold Atomic Gases

• URL: http://arxiv.org/abs/2202.00562v1
• Date: Tue, 1 Feb 2022 17:06:51 GMT
• Title: Observation of Light-Induced Dipole-Dipole Forces in Ultracold Atomic Gases
• Authors: Mira Maiw\"oger, Matthias Sonnleitner, Tiantian Zhang, Igor Mazets, Marion Mallweger, Dennis R\"atzel, Filippo Borselli, Sebastian Erne, J\"org Schmiedmayer, Philipp Haslinger
• Abstract summary: We investigate an attractive force caused by light induced dipole-dipole interactions in freely expanding ultracold 87Rb atoms. This collective, light-triggered effect results in a self-confining potential with interesting features. The experimental data are discussed in the framework of a theoretical model based on a local-field approach for the light scattered by the atomic cloud.
• Score: 0.1218942279286345
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: We investigate an attractive force caused by light induced dipole-dipole interactions in freely expanding ultracold 87Rb atoms. This collective, light-triggered effect results in a self-confining potential with interesting features: it exhibits nonlocal properties, is attractive for both red and blue-detuned light fields and induces a remarkably strong force that depends on the gradient of the atomic density. The experimental data are discussed in the framework of a theoretical model based on a local-field approach for the light scattered by the atomic cloud.

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