报告题目：Exploiting many-body localization for scalable variational quantum simulation

报 告 人：ROBERT JAMES JOYNT（UNIVERSITY OF WISCONSIN-MADISON）

报告时间：2024年10月24日10：00  

报告地点：理科楼C302

内容摘要：Variational quantum algorithms has emerged as promising approaches to achieving practical quantum advantages using near-term quantum devices. The scalability of these algorithms poses a significant challenge. This is largely attributed to the ”barren plateau” phenomenon, which persists even in the absence of noise. In this work, we explore the many-body localization (MBL)-thermalization phase transitions within a framework of Floquet-initialized variational quantum circuits, using this to avoid barren plateaus. Our results suggest that the role of MBL states should be considered in the design of quantum algorithms.

报告人简介：Robert Joynt received his Ph.D. from the University of Maryland in 1982 and was a postdoctoral fellow at the Cavendish Laboratory of the University of Cambridge and the Institute for Theoretical Physics at ETH-Zurich. He has been Professor of Physics at the University of Wisconsin-Madison from 1986 to 2023, where he is now Emeritus Professor. He is also a Senior Fellow at the Kavli Institute for Theoretical Sciences in Beijing. His research has ranged from the quantum Hall effect to high-Tc superconductivity to neutron stars to quantum computing.