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- Title
Probing spin hydrodynamics on a superconducting quantum simulator.
- Authors
Shi, Yun-Hao; Sun, Zheng-Hang; Wang, Yong-Yi; Wang, Zheng-An; Zhang, Yu-Ran; Ma, Wei-Guo; Liu, Hao-Tian; Zhao, Kui; Song, Jia-Cheng; Liang, Gui-Han; Mei, Zheng-Yang; Zhang, Jia-Chi; Li, Hao; Chen, Chi-Tong; Song, Xiaohui; Wang, Jieci; Xue, Guangming; Yu, Haifeng; Huang, Kaixuan; Xiang, Zhongcheng
- Abstract
Characterizing the nature of hydrodynamical transport properties in quantum dynamics provides valuable insights into the fundamental understanding of exotic non-equilibrium phases of matter. Experimentally simulating infinite-temperature transport on large-scale complex quantum systems is of considerable interest. Here, using a controllable and coherent superconducting quantum simulator, we experimentally realize the analog quantum circuit, which can efficiently prepare the Haar-random states, and probe spin transport at infinite temperature. We observe diffusive spin transport during the unitary evolution of the ladder-type quantum simulator with ergodic dynamics. Moreover, we explore the transport properties of the systems subjected to strong disorder or a tilted potential, revealing signatures of anomalous subdiffusion in accompany with the breakdown of thermalization. Our work demonstrates a scalable method of probing infinite-temperature spin transport on analog quantum simulators, which paves the way to study other intriguing out-of-equilibrium phenomena from the perspective of transport. Quantum devices offer the potential to simulate quantum phenomena, which are otherwise computationally intractable. Here, Shi, Sun, Wang and coauthors use a superconducting quantum simulator to study spin-transport at infinite temperature.
- Subjects
QUANTUM theory; PHASES of matter; ANALOG circuits; HYDRODYNAMICS; TEMPERATURE
- Publication
Nature Communications, 2024, p1
- ISSN
2041-1723
- Publication type
Article
- DOI
10.1038/s41467-024-52082-2