Ergodic-localized junctions in a periodically-driven spin chain
Abstract
We report the analogue simulation of an ergodiclocalized junction by using an array of 12 coupled superconducting qubits. To perform the simulation, we fabricated a superconducting quantum processor that is divided into two domains: a driven domain representing an ergodic system, while the second is localized under the effect of disorder. Due to the overlap between localized and delocalized states, for small disorder there is a proximity effect and localization is destroyed. To experimentally investigate this, we prepare a microwave excitation in the driven domain and explore how deep it can penetrate the disordered region by probing its dynamics. Furthermore, we performed an ensemble average over 50 realizations of disorder, which clearly shows the proximity effect. Our work opens a new avenue to build quantum simulators of driven-disordered systems with applications in condensed matter physics and material science
Cite
@article{arxiv.2001.09169,
title = {Ergodic-localized junctions in a periodically-driven spin chain},
author = {Chen Zha and V. M. Bastidas and Ming Gong and Yulin Wu and Hao Rong and Rui Yang and Yangsen Ye and Shaowei Li and Qingling Zhu and Shiyu Wang and Youwei Zhao and Futian Liang and Jin Lin and Yu Xu and Cheng-Zhi Peng and Jorg Schmiedmayer and Kae Nemoto and Hui Deng and W. J. Munro and Xiaobo Zhu and Jian-Wei Pan},
journal= {arXiv preprint arXiv:2001.09169},
year = {2020}
}