Storage and release of subradiant excitations in a dense atomic cloud

• URL: http://arxiv.org/abs/2012.10222v1
• Date: Fri, 18 Dec 2020 13:39:09 GMT
• Title: Storage and release of subradiant excitations in a dense atomic cloud
• Authors: Giovanni Ferioli, Antoine Glicenstein, Loic Henriet, Igor Ferrier-Barbut, Antoine Browaeys
• Abstract summary: We report the observation of subradiance in dense ensembles of cold $87$Rb atoms operating near Dicke's regime of a large number of atoms. We probe the dynamics in the many-body regime and support the picture that multiply-excited subradiant states are built as a superposition of singly-excited states that decay independently.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: We report the observation of subradiance in dense ensembles of cold $^{87}$Rb atoms operating near Dicke's regime of a large number of atoms in a volume with dimensions smaller than the transition wavelength. We validate that the atom number is the only cooperativity parameter governing subradiance. We probe the dynamics in the many-body regime and support the picture that multiply-excited subradiant states are built as a superposition of singly-excited states that decay independently. Moreover, we implement an experimental procedure to release the excitation stored in the long-lived modes in a pulse of light. This technique is a first step towards the realization of tailored light storing based on subradiance.

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