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

Research Project

Project/Area Number 20J23551
Research Category

Grant-in-Aid for JSPS Fellows

Allocation TypeSingle-year Grants
Section国内
Review Section Basic Section 32010:Fundamental physical chemistry-related
Research InstitutionThe University of Tokyo

Principal Investigator

ZHANG Youyuan  東京大学, 理学系研究科, 特別研究員(DC1)

Project Period (FY) 2020-04-24 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥3,400,000 (Direct Cost: ¥3,400,000)
Fiscal Year 2022: ¥1,100,000 (Direct Cost: ¥1,100,000)
Fiscal Year 2021: ¥1,100,000 (Direct Cost: ¥1,100,000)
Fiscal Year 2020: ¥1,200,000 (Direct Cost: ¥1,200,000)
KeywordsAir-lasing / Ionization / Excitation / Rotational excitation / Population transfer / Dynamics / Quantum simulation / Intense laser field / Population inversion / Intense field
Outline of Research at the Start

This research aims at developing a new theoretical model for simulating strong field ionization and post-ionization excitation with general application, which includes optical coupling before ionization, affect from multi-electron interaction during ionization and the excitation process in ions.

Outline of Annual Research Achievements

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.

Research Progress Status

令和4年度が最終年度であるため、記入しない。

Strategy for Future Research Activity

令和4年度が最終年度であるため、記入しない。

Report

(3 results)
  • 2022 Annual Research Report
  • 2021 Annual Research Report
  • 2020 Annual Research Report
  • Research Products

    (12 results)

All 2023 2022 2021 2020

All Journal Article (4 results) (of which Peer Reviewed: 4 results,  Open Access: 2 results) Presentation (7 results) (of which Int'l Joint Research: 3 results) Book (1 results)

  • [Journal Article] Error-mitigated quantum computing of Heisenberg spin chain dynamics2023

    • Author(s)
      Lotstedt Erik、Wang Lidong、Yoshida Ryuhei、Zhang Youyuan、Yamanouchi Kaoru
    • Journal Title

      Physica Scripta

      Volume: 98 Issue: 3 Pages: 035111-035111

    • DOI

      10.1088/1402-4896/acbcac

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Effects of ionization timing for off-resonant population transfer by postionization excitation in N2+2022

    • Author(s)
      Zhang Youyuan、Loetstedt Erik、Yamanouchi Kaoru
    • Journal Title

      Physical Review A

      Volume: 106 Issue: 6 Pages: 063109-063109

    • DOI

      10.1103/physreva.106.063109

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Rotational population transfer through the A2Πu-X2Σg+-B2Σu+ coupling in N2+ lasing2021

    • Author(s)
      Youyuan Zhang、Erik Lotstedt、Toshiaki Ando、Atsushi Iwasaki、Huailiang Xu、Kaoru Yamanouchi
    • Journal Title

      Physical Review A

      Volume: 104 Issue: 2 Pages: 023107-023107

    • DOI

      10.1103/physreva.104.023107

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Rotationally induced population inversion between the B2Σu+ and X2Σg+ states of N2+ exposed to an intense laser pulse2020

    • Author(s)
      Y. Zhang, E. Lostedt, K. Yamanouchi
    • Journal Title

      PHYSICAL REVIEW A

      Volume: 101 Issue: 5 Pages: 053412-053412

    • DOI

      10.1103/physreva.101.053412

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] Dependence of population transfer in N2+ on the ionization timing in a strong laser field2021

    • Author(s)
      Youyuan ZHANG
    • Organizer
      International Symposium on Recent Development in Atomic, Molecular, and Optical Science 2022
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Dependence of population transfer in N2+ on the ionization timing in a strong laser field2021

    • Author(s)
      Youyuan ZHANG
    • Organizer
      日本化学会第102春季年会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Rotationally induced population inversion between the B2+u and X2+g states of N2+ exposed to a near-IR ultrashort intense laser field2021

    • Author(s)
      Youyuan ZHANG
    • Organizer
      2021 International Chemical Congress of Pacific Basin Societies Virtual Congress
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Dependence of N2+ lasing on the ionization time in a strong laser field2021

    • Author(s)
      Youyuan ZHANG
    • Organizer
      15th Annual Meeting of Japan Society for Molecular Science
    • Related Report
      2021 Annual Research Report
  • [Presentation] Rotational coherence created in the B state of N2+ in air lasing at 391 nm2021

    • Author(s)
      Youyuan ZHANG
    • Organizer
      日本化学会第101春季年会
    • Related Report
      2020 Annual Research Report
  • [Presentation] Rotational coherence in R-branch transition of air lasing at 391 nm2020

    • Author(s)
      Youyuan ZHANG
    • Organizer
      分子科学討論会
    • Related Report
      2020 Annual Research Report
  • [Presentation] Population inversion between B2Σ+u and X2Σ+g states of N2+ assisted by rotational excitation2020

    • Author(s)
      Youyuan ZHANG
    • Organizer
      The 22nd International conference on ultrafast phenomena
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Book] Progress in Photon Science2021

    • Author(s)
      Kaoru Yamanouchi, Alina A. Manshina, Vladimir A. Makarov
    • Total Pages
      204
    • Publisher
      Springer Cham
    • ISBN
      9783030776466
    • Related Report
      2021 Annual Research Report

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Published: 2020-07-07   Modified: 2024-03-26  

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