Mapping topology-disorder phase diagram with a quantum simulator
arXiv (Cornell University)(2023)
Abstract
We explore the topology-disorder phase diagram by simulating one-dimensional
Su-Schrieffer-Heeger (SSH) model with quasiperiodic disorder using a
programmable superconducting simulator. We experimentally map out and identify
various trivial and topological phases with extended and localized bulk states.
We find that in the topological phase the bulk states can be critically
localized without mobility edge or contain both critically and completely
localized states. In addition, there exist trivial and topological intermediate
phases with mobility edge and coexistence of extended and completely localized
states. The presence of the surprisingly rich phases in the simple SSH model
with quasiperiodic disorder sheds new light on the investigation of the
topological and localization phenomena in condensed-matter physics.
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Key words
quantum simulator,phase,topology-disorder
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