Zak phase of photons in optical waveguide lattices

Abstract

Zak phase, i.e. the Berry phase acquired during an adiabatic motion of a Bloch particle across the Brillouin zone, provides a measure of the topological invariant of Bloch bands in one-dimensional crystalline potentials. Here a photonic structure, based on engineered lattices of evanescently-coupled optical waveguides, is proposed to detect Zak phase difference of photons undergoing Bloch oscillations in topologically distinct Bloch bands of dimerized superlattices.

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References in corpus (6)

• Topological Transition in a Non-Hermitian Quantum Walk
• Observation of Topological Phase Transitions in Photonic Quasicrystals
• Direct imaging of topological edge states in cold-atom systems
• Fractional Bloch oscillations in photonic lattices
• Interferometric approach to measuring band topology in 2D optical lattices
• Geometric Phase and Quantum Phase Transition : Two-Band Model

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