【直播】量子材料中的Floquet调控与几何动力学效应

KouShare 蔻享学术 2022-07-02

直播信息

报告题目

量子材料中的Floquet调控与几何动力学效应

报告人（单位）

岡隆史教授（东京大学物性研究所）

报告时间

2022年6月29日（周三） 14:00

主办方

中国科学院物理研究所

直播二维码

报告人介绍

Professor Oka obtained his PhD in physics from the University of Tokyo in 2005. After a sojourn in Germany, where he was a group leader in both the Max Planck Institute for the Physics of Complex Systems, and the Max Planck Institute for the Chemical Physics of Solids, he returned to his alma mater and is presently a professor at the Institute for Solid State Physics. Prof. Oka has done many influential works in the field of strongly correlated electrons and nonequilibrium dynamics, and was recognized by many awards. This year, he was a recipient of the Japan Academy Medal for his contribution to the “theory of dynamical control of quantum materials”.

报告摘要

In this talk, I will discuss recent progress in controlling material properties with laser fields. Specifically, I will focus on the coherent dynamics of electrons and spins generated by pulsed laser fields, emphasizing geometric dynamical effects. An important concept is Floquet engineering, which controls quantum systems using periodic driving [1]. One can effectively realize Floquet topological insulators, chiral spin liquids, and even chiral superconductors by irradiating circularly polarized lasers. If time permits, I will explain other geometric effects, such as the twisted Landau-Zener tunneling discussed by M.V. Berry in the tunneling mechanism of electron-hole pair production [2].

[1] TO, Kitamura, Annu. Rev. Condens. Matter Phys. 10, 387 (2019)
[2] Takayoshi, Wu, TO, SciPost Phys. 11, 075 (2021).

扩展阅读

1. 2022材料多尺度计算模拟国际会议

2. CCF 量子人工智能研讨会

3. 中国科大郭光灿院士：量子信息技术研究现状与未来

4.《2022百望讲坛·量子通信日》：量子通信的基础研究进展

5. 福建省量子调控与新能源材料重点实验室第三届第一次学术委员会会议暨“量子”与“双碳”前沿论坛

编辑：王媛媛

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