Emergent universal dynamics for an atomic cloud coupled to an optical wave-guide

Abstract

We study the dynamics of a single collective excitation in a cold ensemble of atoms coupled to a one-dimensional waveguide. The coupling between the atoms and the photonic modes provides a coherent and a dissipative dynamics for this collective excitation. While the dissipative part accounts for the collectively enhanced and directed emission of photons, we find a remarkable universal dynamics for increasing atom numbers exhibiting several revivals under the coherent part. While this phenomenon provides a limit on the intrinsic dephasing for such a collective excitation, a setup is presented, where this remarkable universal dynamics can be explored.

arXiv commentMain text: 5 pages, 3 figures, Supplement Material: 10 pages, 1 figure

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• Subradiance dynamics in a singly-excited chiral-coupled atomic chain
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