Single collective excitation of an atomic array trapped along a waveguide: a study of cooperative emission for different atomic chain configurations

• URL: http://arxiv.org/abs/2101.05398v2
• Date: Mon, 12 Apr 2021 19:01:53 GMT
• Title: Single collective excitation of an atomic array trapped along a waveguide: a study of cooperative emission for different atomic chain configurations
• Authors: V. A. Pivovarov, L. V. Gerasimov, J. Berroir, T. Ray, J. Laurat, A. Urvoy and D. V. Kupriyanov
• Abstract summary: Ordered atomic arrays trapped in the vicinity of nanoscale waveguides offer original light-matter interfaces. We study the decay dynamics of a single collective atomic excitation coupled to a waveguide in different configurations.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Ordered atomic arrays trapped in the vicinity of nanoscale waveguides offer original light-matter interfaces, with applications to quantum information and quantum non-linear optics. Here, we study the decay dynamics of a single collective atomic excitation coupled to a waveguide in different configurations. The atoms are arranged as a linear array and only a segment of them is excited to a superradiant mode and emits light into the waveguide. Additional atomic chains placed on one or both sides play a passive role, either reflecting or absorbing this emission. We show that when varying the geometry, such a one-dimensional atomic system could be able to redirect the emitted light, to directionally reduce or enhance it, and in some cases to localize it in a cavity formed by the atomic mirrors bounding the system.

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