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28 March 2024
 
  » arxiv » 1901.3346

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Machine learning assisted measurement of local topological invariants
Marcello D. Caio ; Marco Caccin ; Paul Baireuther ; Timo Hyart ; Michel Fruchart ;
Date 10 Jan 2019
AbstractThe continuous effort towards topological quantum devices calls for an efficient and non-invasive method to assess the conformity of components in different topological phases. Here, we show that machine learning paves the way towards non-invasive topological quality control. We introduce a local topological marker, able to discriminate between topological phases of one-dimensional wires. The direct observation of this marker in solid state systems is challenging, but we show that an artificial neural network can learn to approximate it from the experimentally accessible local density of states. Our method distinguishes different non-trivial phases, even for systems where direct transport measurements are not available and for composite systems. This new approach could find significant use in experiments, ranging from the study of novel topological materials to high-throughput automated material design.
Source arXiv, 1901.3346
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