Experimental observation of dynamical bulk-surface correspondence in momentum space for topological phases
At a Glance
Section titled āAt a Glanceā| Metadata | Details |
|---|---|
| Publication Date | 2019-11-25 |
| Journal | Physical review. A/Physical review, A |
| Authors | Ya Wang, Wentao Ji, Zihua Chai, Yuhang Guo, Mengqi Wang |
| Institutions | Hefei National Center for Physical Sciences at Nanoscale, Peking University |
| Citations | 32 |
Abstract
Section titled āAbstractāWe experimentally demonstrate a dynamical classification approach for investigation of topological quantum phases using a solid-state spin system through nitrogen-vacancy (NV) center in diamond. Similar to the bulkboundary correspondence in real space at equilibrium, we observe a dynamical bulk-surface correspondence in the momentum space from a dynamical quench process. An emergent dynamical topological invariant is precisely measured in experiment by imaging the dynamical spin-textures on the recently defined band-inversion surfaces, with high topological numbers being implemented. Importantly, the dynamical classification approach is shown to be independent of quench ways and robust to the decoherence effects, offering a novel and practical strategy for dynamical topology characterization, especially for high dimensional gapped topological phases.