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From superradiance to subradiance: exploring the many-body Dicke ladder

Abstract : We report a time-resolved study of collective emission in dense ensembles of two-level atoms. We compare, on the same sample, the buildup of superradiance and subradiance from the ensemble when driven by a strong laser. This allows us to measure the dynamics of the population of superradiant and subradiant states as a function of time. In particular, we demonstrate the buildup in time of subradiant states through superradiant dynamics. This illustrates the dynamics of the many-body density matrix of superradiant ensembles of two-level atoms when departing from the ideal conditions of Dicke superradiance, in which symmetry forbids the population of subradiant states.
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https://hal-cnrs.archives-ouvertes.fr/hal-03810439
Contributor : Igor Ferrier-Barbut Connect in order to contact the contributor
Submitted on : Tuesday, October 11, 2022 - 1:59:23 PM
Last modification on : Friday, October 14, 2022 - 3:33:39 AM

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Antoine Glicenstein, Giovanni Ferioli, Antoine Browaeys, Igor Ferrier-Barbut. From superradiance to subradiance: exploring the many-body Dicke ladder. Optics Letters, 2022, 47 (6), pp.1541. ⟨10.1364/OL.451903⟩. ⟨hal-03810439⟩

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