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Competition and interplay between topology and quasi-periodic disorder in Thouless pumping of ultracold atoms
- Source :
- Nature Physics. 17:844-849
- Publication Year :
- 2021
- Publisher :
- Springer Science and Business Media LLC, 2021.
-
Abstract
- Robustness against perturbations lies at the heart of topological phenomena. If, however, a perturbation such as disorder becomes dominant, it may cause a topological phase transition between topologically non-trivial and trivial phases. Here we experimentally reveal the competition and interplay between topology and quasi-periodic disorder in a Thouless pump realized with ultracold atoms in an optical lattice, by creating a quasi-periodic potential from weak to strong regimes in a controllable manner. We demonstrate a disorder-induced pumping in which the presence of quasi-periodic disorder can induce a non-trivial pump for a specific pumping sequence, while no pump is observed in the clean limit. Our highly controllable system, which can also straightforwardly incorporate interatomic interaction, could be a unique platform for studying various disorder-related novel effects in a wide range of topological quantum phenomena.<br />9 + 9 pages, 5 + 9 figures
- Subjects :
- Physics
Optical lattice
Sequence
FOS: Physical sciences
General Physics and Astronomy
Perturbation (astronomy)
Macroscopic quantum phenomena
Topology
01 natural sciences
010305 fluids & plasmas
Quantum Gases (cond-mat.quant-gas)
Ultracold atom
0103 physical sciences
Topological order
Limit (mathematics)
Condensed Matter - Quantum Gases
010306 general physics
Topology (chemistry)
Subjects
Details
- ISSN :
- 17452481 and 17452473
- Volume :
- 17
- Database :
- OpenAIRE
- Journal :
- Nature Physics
- Accession number :
- edsair.doi.dedup.....bd755ed1fe5af792841182d950a839e4