Observation of strong and weak thermalization in a superconducting quantum processor
Quantum Physics
2021-07-13 v1
Abstract
We experimentally study the ergodic dynamics of a 1D array of 12 superconducting qubits with a transverse field, and identify the regimes of strong and weak thermalization with different initial states. We observe convergence of the local observable to its thermal expectation value in the strong-thermalizaion regime. For weak thermalization, the dynamics of local observable exhibits an oscillation around the thermal value, which can only be attained by the time average. We also demonstrate that the entanglement entropy and concurrence can characterize the regimes of strong and weak thermalization. Our work provides an essential step towards a generic understanding of thermalization in quantum systems.
Cite
@article{arxiv.2102.08587,
title = {Observation of strong and weak thermalization in a superconducting quantum processor},
author = {Fusheng Chen and Zheng-Hang Sun and Ming Gong and Qingling Zhu and Yu-Ran Zhang and Yulin Wu and Yangsen Ye and Chen Zha and Shaowei Li and Shaojun Guo and Haoran Qian and He-Liang Huang and Jiale Yu and Hui Deng and Hao Rong and Jin Lin and Yu Xu and Lihua Sun and Cheng Guo and Na Li and Futian Liang and Cheng-Zhi Peng and Heng Fan and Xiaobo Zhu and Jian-Wei Pan},
journal= {arXiv preprint arXiv:2102.08587},
year = {2021}
}
Comments
6+6 pages, 4+8 figures