Artificial gauge fields and topological insulators in Moire superlattices

Abstract

We propose an innovative quantum emulator based on Moire superlattices showing that, by employing periodical modulation on each lattice site, one can create tunable, artificial gauge fields with imprinting Peierls phases on the hopping parameters and realize an analog of novel Haldane-like phase. As an application, we provide a methodology to directly quantify the topological invariant in such a system from a dynamical quench process. This design shows a robustly integrated platform which opens a new door to investigate topological physics.

References in corpus (4)

• Observation of phononic helical edge states in a mechanical 'topological insulator'
• Continuum Model of the Twisted Bilayer
• A General Theorem Relating the Bulk Topological Number to Edge States in Two-dimensional Insulators
• Delocalization-enhanced Bloch oscillations and driven resonant tunneling in optical lattices for precision force measurements