邀请人：屈凡明

摘要：Topological superconductivity can host Majorana zero modes at the defects or boundaries of the system. These zero modes are Ising anyons that obey the exotic non-Abelian exchange statistics and can be used to implement error-resilient topological quantum computing. In recent years, quantum-dot-superconductor array has emerged as a new and promising platform for realizing topological Kitaev chains and Majorana zero modes. In this talk, I will talk about our theoretical proposals for how to create a highly tunable Kitaev chain and find Majoranas in double quantum dots [1], and also proposals for scaling up the system [2]. Our emphasis will be on the crucial role of Andreev bound states acting as a coupler. In parallel, I will also review the recent progress in Kitaev chain experiment [3,4]. If time permits, I will discuss the possible new directions in this field.

[1] C.-X. Liu et. al. PRL 129, 267701 (2022)
[2] C.-X. Liu et. al. PR Res. 7, L012045 (2025)
[3] T. Dvir et. al. Nature 614, 445 (2023)
[4] S. L. D. ten Haaf et. al. Nature 641, 890 (2025)

报告人简介：Chun-Xiao Liu did his undergraduate study in the department of physics at Fudan University during 2008-2012. He obtained the PhD degree in condensed matter theory in University of Maryland in 2018, under the joint supervision of Prof. Jay D. Sau and Prof. Sankar Das Sarma. He then moved to QuTech, Delft University of Technology, the Netherlands to work as a postdoc, before being promoted as a permanent researcher in 2023. In 2025, he joined Tsung-Dao Lee Institute, Shanghai Jiao Tong University as a tenure-track associate professor. His research interest covers topological phases of matter, mesoscopic physics, quantum device physics, and topological quantum computing.