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Conferences > EQEC > 2019 > ec_p > ec_p_14
  • 2019 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference
  • OSA Technical Digest (Optica Publishing Group, 2019),
  • paper ec_p_14

Experimental Demonstration of a Non-Quantized Square-Root Topological Insulator using Photonic Aharonov-Bohm Cages

Mark Kremer, Ioannis Petrides, Eric Meyer, Matthias Heinrich, Oded Zilberberg, and Alexander Szameit

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Abstract

In many applications, topological effects can be characterized by a quantized topological invariant [1]. In this work, we investigate a new type of topological insulator that stands apart from this formalism, since it exhibits spectral bands with non-quantized topological properties. As it turns out, this system can nevertheless be reconciled with the existing paradigm, since a quantization can be established by squaring the Hamiltonian Fig. 1(b).

© 2019 IEEE

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