Floquet Prethermal Phase Protected by U(1) Symmetry on a Superconducting Quantum Processor
Abstract
Periodically driven systems, or Floquet systems, exhibit many novel dynamics and interesting out-of-equilibrium phases of matter. Those phases arising with the quantum systems' symmetries, such as global symmetry, can even show dynamical stability with symmetry-protection. Here we experimentally demonstrate a symmetry-protected prethermal phase, via performing a digital-analog quantum simulation on a superconducting quantum processor. The dynamical stability of this phase is revealed by its robustness against external perturbations. We also find that the spin glass order parameter in this phase is stabilized by the interaction between the spins. Our work reveals a promising prospect in discovering emergent quantum dynamical phases with digital-analog quantum simulators.
Keywords
Cite
@article{arxiv.2107.07311,
title = {Floquet Prethermal Phase Protected by U(1) Symmetry on a Superconducting Quantum Processor},
author = {Chong Ying and Qihao Guo and Shaowei Li and Ming Gong and Xiu-Hao Deng and Fusheng Chen and Chen Zha and Yangsen Ye and Can Wang and Qingling Zhu and Shiyu Wang and Youwei Zhao and Haoran Qian and Shaojun Guo and Yulin Wu and Hao Rong and Hui Deng and Futian Liang and Jin Lin and Yu Xu and Cheng-Zhi Peng and Chao-Yang Lu and Zhang-Qi Yin and Xiaobo Zhu and Jian-Wei Pan},
journal= {arXiv preprint arXiv:2107.07311},
year = {2022}
}
Comments
14 pages, 4 figures, and supplementary materials