Theoretical studies on photo-excitation processes of molecular ions generated in intense laser fields

强激光场中分子离子光激发过程的理论研究

• 批准号: 20J23551
• 负责人: ZHANG Youyuan
• 金额: $ 2.18万
• 依托单位: The University of Tokyo
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for JSPS Fellows
• 财政年份: 2020
• 资助国家: 日本
• 起止时间: 2020-04-24 至 2023-03-31
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-20J23551/
• 关键词: Air-lasing; Ionization; Excitation; Rotational excitation; Population transfer; Dynamics; Quantum simulation; Intense laser field; Population inversion; Intense field

Based on the results of the simulations performed in the past academic year, the ionization timing issue is further investigated, so that all the ionization processes induced throughout the entire laser pulse can be included.Secondly, we developed quantum algorithms for simulating the post-ionization excitation process using the sudden turn-on model on a quantum computer. Both simulator testing and real machine IBM-Q and continuum testing are done.Thirdly, by taking advantage of the theoretical methods I developed in the past fiscal year on the ionization and excitation of molecular systems, I investigated theoretically how molecules are ionized and excited by an attosecond laser pulse whose wavelength is in the extreme ultraviolet region.

在过去一学年的模拟结果的基础上，进一步研究了电离时间问题，以便涵盖整个激光脉冲中感应的所有电离过程。其次，我们开发了在量子计算机上使用突然开启模型来模拟后电离激发过程的量子算法。第三，利用我在过去一年中发展起来的关于分子体系电离和激发的理论方法，从理论上研究了波长在极紫外区的阿秒激光脉冲是如何电离和激发分子的。

项目成果

Rotationally induced population inversion between the B2Σu+ and X2Σg+ states of N2+ exposed to an intense laser pulse

• DOI: 10.1103/physreva.101.053412
• 发表时间: 2020-05
• 期刊: Physical Review A
• 影响因子: 2.9
• 作者: Youyuan Zhang;E. Lötstedt;K. Yamanouchi

Dependence of N2+ lasing on the ionization time in a strong laser field

强激光场中 N2 激光对电离时间的依赖性

• 发表时间: 2021
• 作者: Ohira;G.;Kashioka;S.;Takao;Y.;Iyoda;T.;Tsuda;Y;Youyuan ZHANG;Youyuan ZHANG
• 通讯作者: Youyuan ZHANG

Dependence of population transfer in N2+ on the ionization timing in a strong laser field

N2 中的粒子数迁移对强激光场中电离时间的依赖性

• 发表时间: 2021
• 作者: TAKEUCHI Nobuyuki;SAKAMOTO Kosei;ISOBE Takanori;Youyuan ZHANG
• 通讯作者: Youyuan ZHANG

Rotational coherence in R-branch transition of air lasing at 391 nm

391 nm 空气激光 R 分支跃迁中的旋转相干性

• 发表时间: 2020
• 作者: Inoue Tomoyoshi;Sasaki Mika;Nishio Kenzo;Kubota Toshihiro;Awatsuji Yasuhiro;Youyuan ZHANG
• 通讯作者: Youyuan ZHANG

Error-mitigated quantum computing of Heisenberg spin chain dynamics

• DOI: 10.1088/1402-4896/acbcac
• 发表时间: 2023-02
• 期刊: Physica Scripta
• 影响因子: 2.9
• 作者: E. Lötstedt;Lidong Wang;R. Yoshida;Youyuan Zhang;K. Yamanouchi