报告题目：Topological quantum simulation in the momentum lattice

报告人：谢笛舟 博士（因斯布鲁克大学）

报告时间：2024年7月5号（周五）上午10:00

报告地点：光电所二层报告厅

报告摘要：  

In this report, I will give two topological quantum simulations work based on synthetic lattice. The first work is the study of the topological properties of extended SSH model - SSH4. We implement the SSH4 model in the momentum space lattice by using ultracold atoms. It is verified by experiments that the model's winding number can be obtained by the higher dimensional extension of the mean chiral displacement. The topological phase transition of the system is given experimentally, and the topological edge states are confirmed by quenching dynamics.The second work is the study of the topological properties of discrete time quantum walk. The topological quantum walk in discrete time is realized by using the ultracold atom in the momentum space lattice. The topological properties of the system are proved experimentally by measuring the time average chiral displacement and the second order statistical moment. In addition, the interaction induced localization in quantum walk dynamics is also observed experimentally.

报告人简介：  

谢笛舟，2022-至今，因斯布鲁克大学Hanns-Christoph Nägerl教授组博士后，2021年毕业于浙江大学物理系，获博士学位。浙江大学博士期间，在颜波老师课题组搭建了Rb BEC实验装置，搭建了一维和二维动量晶格，并在此基础上开展了拓扑量子模拟的工作。因斯布鲁克博士后期间，在Hanns-Christoph-nagerl课题组，参与搭建Cavity-Yb-tweezer.