Probing spin hydrodynamics on a superconducting quantum simulator
- URL: http://arxiv.org/abs/2310.06565v2
- Date: Tue, 17 Oct 2023 15:25:31 GMT
- Title: Probing spin hydrodynamics on a superconducting quantum simulator
- Authors: Yun-Hao Shi, Zheng-Hang Sun, Yong-Yi Wang, Zheng-An Wang, Yu-Ran
Zhang, Wei-Guo Ma, Hao-Tian Liu, Kui Zhao, Jia-Cheng Song, Gui-Han Liang,
Zheng-Yang Mei, Jia-Chi Zhang, Hao Li, Chi-Tong Chen, Xiaohui Song, Jieci
Wang, Guangming Xue, Haifeng Yu, Kaixuan Huang, Zhongcheng Xiang, Kai Xu,
Dongning Zheng, and Heng Fan
- Abstract summary: We experimentally realize the analog quantum circuit, which can efficiently prepare the Haar-random states.
We observe diffusive spin transport during the unitary evolution of the ladder-type quantum simulator.
Our work demonstrates a scalable method of probing infinite-temperature spin transport on analog quantum simulators.
- Score: 20.631487427047873
- License: http://creativecommons.org/licenses/by/4.0/
- 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. Simulating infinite-temperature
transport on large-scale complex quantum systems remains an outstanding
challenge. 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 titled 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.
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