Hard-core Hall tube in superconducting circuits  

作　　者：Xin Guan Gang Chen Jing Pan Zhi-Guo Gui 关欣;陈刚;潘婧;桂志国(Department of Materials and Chemical Engineering,Taiyuan University,Taiyuan 030032,China;State Key Laboratory of Quantum Optics and Quantum Optics Devices,Institute of Laser Spectroscopy,Shanxi University,Taiyuan 030006,China;Collaborative Innovation Center of Extreme Optics,Shanxi University,Taiyuan 030006,China;Collaborative Innovation Center of Light Manipulations and Applications,Shandong Normal University,Jinan 250358,China)

机构地区：[1]Department of Materials and Chemical Engineering,Taiyuan University,Taiyuan 030032,China [2]State Key Laboratory of Quantum Optics and Quantum Optics Devices,Institute of Laser Spectroscopy,Shanxi University,Taiyuan 030006,China [3]Collaborative Innovation Center of Extreme Optics,Shanxi University,Taiyuan 030006,China [4]Collaborative Innovation Center of Light Manipulations and Applications,Shandong Normal University,Jinan 250358,China

出　　处：《Chinese Physics B》2022年第8期226-233,共8页中国物理B（英文版）

基　　金：Project supported by the National Key Program of the National Health Commission’s“Thirteenth Five-Year Plan”(Grant No.NHFPC102018);the Ministry of Education Collaborative Education Program(Grant No.202101029006);the Natural Science Foundation of Shanxi Province,China(Grant No.202103021223010);the Shanxi Province Higher Education Science and Technology Innovation Program(Grant No.J2021770);the Natural Science Foundation of Taiyuan University,China(Grant No.21TYKQ22)。

摘　　要：The Hall tube as a minimum model to simulate the integer quantum Hall effect is essential for exploring topological physics, while it has not been constructed in the recent developing successfully experiments on superconducting circuits.In this work, we propose a feasible experiment scheme using three legs superconducting circuits with transmon qubits to realize a Hall tube. Then we first investigate its topological properties. Since the time–reversal, particle–hole, and chiral symmetries are all broken for the system, the Hall tube belongs to the A class of the Altland–Zirnbauer classification.We obtain the corresponding topological phase transition both numerically and analytically. Since the chirality is a key character of the quantum Hall effect, we secondly investigate the chiral physics in the Hall tube. We find the topological protected chiral edge currents and discuss its robustness. Finally, we give the possible experimental observations of the topological state and topological protected chiral edge currents.

关 键 词：Hall tube superconducting circuits topological phase transition chiral edge currents 

分 类 号：O469[理学—凝聚态物理]