报告题目：Catching and steering electrons in action by light

报告人：Kiyoshi Ueda  教授，Tohoku University

报告时间：2024年4月13日（星期六）上午10：30-12：00

报告地点：致知楼3624会议室

报告摘要：

The natural time scale of electrons in action is of the order of attoseconds (1 as =10^-18 s). Recent developments of generating attosecond pulses both in the laboratories and free electron laser facilities make an intangible dream of watching electrons in action a tangible reality the Nobel prize of physics this year was awarded to this field of attosecond science. Generations of isolated attosecond pulses in the soft X-ray regime at at LCLS in the USA opens a new route to measure molecular core-level photoionization time delays that occurs in the attosecond timescale [1]. Generations of two-colour attosecond pulses at LCLS opened the door to watch the electron (charge) in action in a molecule that occurs in the attosecond timescale [2]. Generating phase-coherent multi-colour pulses at FERMI, on the hand, provided a novel approach to coherently control the electronic wave-packet [3] and to read out the photoionization phase, or attosecond photoionization time delay [4]. The talk will also address the titled study with laboratory attosecond pulse train light sources, complementary to FELs, combined with combined with REMI/COLTRIMS [5,6]. I acknowledge all the collaborators in the authors list of [1-6] for fruitful collaborations.

[1] T. Driver et al. https://arxiv.org/abs/2402.12764; J.-B. Ji et al. https://arxiv.org/abs/2402.17685

[2] T. Barillot et al. PRX 11, 031048 (2021); more in preparations.

[3] K. Prince et al. Nat. Photon, 10, 176 (2016); D. Iablonskyi et al. PRL119, 073203 (2017); D. You et al. New J. Phys. 21, 113036 (2019).

[4] M. Di Fraia et al. PRL 123, 213904 (2019); D. You et al. PRX 10, 031070 (2020).

[5] X. Gong et al. PRX 12, 011002 (2022); W. Jiang et al. Nat. Comm. 13, 5072 (2022).

[6] M. Han et al. Nat. Phys. 19, 230 (2023); Optica 10, 1044 (2023); Nature Photonics18, 311 (2024); Sci. Adv. 10, eadj2629 (2024)

报告人简介：

Kiyoshi Ueda，日本东北大学教授。Ueda教授1982年博士毕业于日本京都大学，1982年至1990年在日本东北大学任助理教授，1990年至2003年任副教授，自2003年起任正教授。2020年起，任上海科技大学兼职教授。任PRX、JPB等国际知名学术期刊编委，ICPEAC等国际知名学术会议主席或学术委员。研究方向包括原子分子团簇纳米体系的超快动力学，迄今发表论文600余篇，包括2 篇Nature, 6 篇Nature Photonics, 4 篇Nature Physics, 9 篇Nature Communications, 3篇 Science Advances, 2 篇PNAS, 9 篇PRX, 54 篇PRL, 5 篇JPCL。