Probing one-dimensional topological phases in waveguide lattices with broken chiral symmetry

Abstract

One-dimensional lattices with chiral symmetry are known to possess quantized Zak phase and nontrivial topological phases. Here it is shown that quantized Zak phase and nontrivial edge states, partially protected by inversion symmetry rather than chiral symmetry, can be observed and probed in the bulk exploiting continuous-time photonic quantum walk in zig-zag waveguide arrays. Averaged beam displacement measurements can detect quantized Zak phase and non-trivial topological phases in the extended Su-Schrieffer-Heeger model with broken chiral symmetry.

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References in corpus (8)

• Topological Photonics
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• Selective enhancement of topologically induced interface states in a dielectric resonator chain
• Topological Transition in a Non-Hermitian Quantum Walk
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