Observation of frustrated chiral dynamics in an interacting triangular flux ladder

Yuqing Li, Huiying Du, Yunfei Wang, Junjun Liang, Liantuan Xiao, Wei Yi (), Jie Ma () and Suotang Jia
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Yuqing Li: Shanxi University
Huiying Du: Shanxi University
Yunfei Wang: Shanxi University
Junjun Liang: Shanxi University
Liantuan Xiao: Shanxi University
Wei Yi: University of Science and Technology of China
Jie Ma: Shanxi University
Suotang Jia: Shanxi University

Nature Communications, 2023, vol. 14, issue 1, 1-7

Abstract: Abstract Quantum matter interacting with gauge fields, an outstanding paradigm in modern physics, underlies the description of various physical systems. Engineering artificial gauge fields in ultracold atoms offers a highly controllable access to the exotic many-body phenomena in these systems, and has stimulated intense interest. Here we implement a triangular flux ladder in the momentum space of ultracold 133Cs atoms, and study the chiral dynamics under tunable interactions. Through measurements of the site-resolved density evolutions, we reveal how the competition between interaction and flux in the frustrated triangular geometry gives rise to flux-dependent localization and biased chiral dynamics. For the latter in particular, the symmetry between the two legs is dynamically broken, which can be attributed to frustration. We then characterize typical dynamic patterns using complementary observables. Our work opens the avenue toward exploring correlated transport in frustrated geometries, where the interplay between interactions and gauge fields plays a key role.

Date: 2023
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DOI: 10.1038/s41467-023-43204-3

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