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arXiv · 2101.09370

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

Rituraj·Meir Orenstein·Shanhui Fan
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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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Rituraj, Meir Orenstein, Shanhui Fan. 2021-01-22. Photonic Chern insulators from two-dimensional atomic lattices interacting with a single surface plasmon polariton. https://doi.org/10.1103/physrevb.103.125423

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