Photonic Chern insulators from two-dimensional atomic lattices interacting with a single surface plasmon polariton

• URL: http://arxiv.org/abs/2101.09370v1
• Date: Fri, 22 Jan 2021 22:42:00 GMT
• Title: Photonic Chern insulators from two-dimensional atomic lattices interacting with a single surface plasmon polariton
• Authors: Rituraj, Meir Orenstein, Shanhui Fan
• Abstract summary: We study the polaritonic bandstructure of two-dimensional atomic lattices coupled to a single excitation of a surface plasmon polariton mode. We show the possibility of realizing topological gaps with different Chern numbers by having resonant atomic transitions to excited states with different angular momentum.
• Score: 1.5147172044848798
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: We study the polaritonic bandstructure of two-dimensional atomic lattices coupled to a single excitation of a surface plasmon polariton mode. We show the possibility of realizing topological gaps with different Chern numbers by having resonant atomic transitions to excited states with different angular momentum. We employ a computational method based on the recently proposed Dirichlet-to-Neumann (DtN) map technique which accurately models non-Markovian dynamics as well as interactions involving higher-order electric and magnetic multipole transitions. We design topologically robust edge states which are used to achieve unidirectional emission and non-reciprocal transmission of single photons. We also point out the challenges in realizing bands with higher Chern numbers in such systems.

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