Observation of Topological Phase Transitions in Photonic Quasicrystals

2012/11/30 by Mor Verbin, Oded Zilberberg, Yaacov E. Kraus +2 · 2 citations
Physics and Astronomy · #cond-mat.mes-hall #physics.optics #quant-ph

paper · pdf · doi:10.1103/physrevlett.110.076403

published as Phys. Rev. Lett. 110, 076403 (2013) · 7 pages, 6 figures, 2 appendices

arxiv created 2013/02/15 · arxiv updated 2013/02/18

Abstract

Topological insulators and topological superconductors are distinguished by their bulk phase transitions and gapless states at a sharp boundary with the vacuum. Quasicrystals have recently been found to be topologically nontrivial. In quasicrystals, the bulk phase transitions occur in the same manner as standard topological materials, but their boundary phenomena are more subtle. In this Letter we directly observe bulk phase transitions, using photonic quasicrystals, by constructing a smooth boundary between topologically distinct one-dimensional quasicrystals. Moreover, we use the same method to experimentally confirm the topological equivalence between the Harper and Fibonacci quasicrystals.

Cited by

• Family of self-dual quasicrystals with critical Phases
• Quasicrystalline Analogue of the Haldane Model

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