Reconfigurable Microwave Photonic Topological Insulator

Maxim Goryachev and Michael E. Tobar
Phys. Rev. Applied 6, 064006 – Published 9 December 2016

Abstract

Using full 3D finite-element simulation and underlining Hamiltonian models, we demonstrate reconfigurable photonic analogues of topological insulators on a regular lattice of tunable posts in a reentrant 3D lumped element-type system. The tunability allows a dynamical in situ change of media chirality and other properties via the alteration of the same parameter for all posts, and as a result, great flexibility in the choice of bulk-edge configurations. Additionally, one-way photon transport without an external magnetic field is demonstrated. The ideas are illustrated by using both full finite-element simulation as well as simplified harmonic oscillator models. Dynamical reconfigurability of the proposed systems paves the way to a class of systems that can be employed for random access, topological signal processing, and sensing.

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  • Received 8 June 2016

DOI:https://doi.org/10.1103/PhysRevApplied.6.064006

© 2016 American Physical Society

Physics Subject Headings (PhySH)

Condensed Matter, Materials & Applied Physics

Authors & Affiliations

Maxim Goryachev and Michael E. Tobar

  • ARC Centre of Excellence for Engineered Quantum Systems, School of Physics, University of Western Australia, 35 Stirling Highway, Crawley, Western Australia 6009, Australia

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Vol. 6, Iss. 6 — December 2016

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