Observation of Floquet topological phases with large Chern numbers

Abstract

One of the most intriguing advantage of Floquet engineering is to generate new phases with large topological invariants. In this work, we experimentally simulate a periodically quenched generalized Haldane model on an NV center in diamond, and observe its Floquet Chern insulator phases with Chern numbers $C=1,2,4$ by imaging the static and dynamic spin textures in momentum space. Our work reveals the power of Floquet driving in transforming system's topology and generating large Chern number phases. It further establishes a unique experimental scheme to detect Floquet topological phases in two and higher spatial dimensions.

11 pages, figure 1-4, figure s1-s2

References in corpus (9)

• Photovoltaic Hall effect in graphene
• Dynamic polarization of single nuclear spins by optical pumping of NV color centers in diamond at room temperature
• Measurement of a topological edge invariant in a microwave network
• Quantized Adiabatic Transport in Momentum Space
• Distant-Neighbor Hopping in Graphene and Haldane Models
• Single Spin Magnetic Resonance
• Aspects of Floquet Bands and Topological Phase Transitions in a Continuously Driven Superlattice
• Floquet edge states in a harmonically driven integer quantum Hall system
• A computational study of two-terminal transport of Floquet quantum Hall insulators

Cited by in corpus (2)

• Topological Floquet engineering using two frequencies in two dimensions
• Entanglement spectrum and entropy in Floquet topological matter