Emergent Universal Dynamics for an Atomic Cloud Coupled to an Optical Waveguide

Physical Review Letters
Jan KumlinHans Peter Büchler

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 the universal dynamics can be explored.

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Citations

Sep 22, 2018·Physical Review Letters·Nina StiesdalSebastian Hofferberth
Jul 17, 2021·Nature Communications·Nina StiesdalSebastian Hofferberth

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