Synthetic $\pi$-flux system in 2D superconducting qubit array with tunable coupling
Abstract
Flat-band systems provide an ideal platform for exploring exotic quantum phenomena, where the strongly suppressed kinetic energy in these flat energy bands suggests the potential for exotic phases driven by geometric structure, disorder, and interactions. While intriguing phenomena and physical mechanisms have been unveiled in theoretical models, synthesizing such systems within scalable quantum platforms remains challenging. Here, we present the experimental realization of a -flux rhombic system using a two-dimensional superconducting qubit array with tunable coupling. We experimentally observe characteristic dynamics, e.g., -flux driven destructive interference, and demonstrate the protocol for eigenstate preparation in this rhombic array with coupler-assisted flux. Our results provide future possibilities for exploring the interplay of geometry, interactions, and quantum information encoding in such degenerate systems.
Keywords
Cite
@article{arxiv.2501.06743,
title = {Synthetic $\pi$-flux system in 2D superconducting qubit array with tunable coupling},
author = {Yiting Liu and Jiawei Zhang and Zechen Guo and Peisheng Huang and Wenhui Huang and Yongqi Liang and Jiawei Qiu and Xuandong Sun and Zilin Wang and Changrong Xie and Xiaohan Yang and Jiajian Zhang and Libo Zhang and Ji Chu and Weijie Guo and Ji Jiang and Xiayu Linpeng and Song Liu and Jingjing Niu and Yuxuan Zhou and Youpeng Zhong and Wenhui Ren and Ziyu Tao and Dapeng Yu},
journal= {arXiv preprint arXiv:2501.06743},
year = {2025}
}
Comments
6+14 pages, 4+6 figures