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Possibility of realizing a topological superfluidity

Research Project

Project/Area Number 17K14364
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Atomic/Molecular/Quantum electronics
Research InstitutionTokyo Metropolitan University

Principal Investigator

Yoshimi Emiko  東京都立大学, 理学研究科, 准教授 (30706411)

Project Period (FY) 2017-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2020: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2019: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2018: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2017: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Keywords超流動 / トポロジカル / 冷却原子気体 / 超流動の崩壊 / BCS-BEC クロスオーバー / 量子エレクトロニクス
Outline of Final Research Achievements

We study superfluid Fermi gasses with spin-orbit coupling (SOC) in a 1D shallow optical lattice in BCS-BEC crossover.We investigated feasibility of generating superfluidity with SOC in a 1D shallow optical lattice in BCS-BEC crossover
In particular, We revealed the optical intensity and interaction dependence of the superfluid transition temperature with the mixing ratio of s-wave and p-wave superfluidity with SOC in a 1D shallow optical lattice in BCS-BEC crossover.
Furthermore, We investigated dynamic properties of superfluidity with SOC in a 1D shallow optical lattice in BCS-BEC crossover. Moving the optical lattice at a constant velocity, We study instability of superfluidity with SOC in a 1D shallow optical lattice in BCS-BEC crossover.

Academic Significance and Societal Importance of the Research Achievements

本研究では、超流動がトポロジカル超流動であるか検証し、トポロジカル超流動と超伝導における普遍 的な物理現象の詳細な解明を目指した。本研究では実験できる状況を念頭に置いて結果を出しているため、実験との比較が容易に出来ることから、これまで不確かであったトポロジカル量子現象について新たな 解釈を与えることが期待される。
本研究で行った、超流動の崩壊といった動的性質は超流動の素励起や集団励起の性質をよく反映するが、その研究は少ない。光格子がある場合については スピン軌道相互作用のない超流動ですら理論的研究は不十分であり、本研究により、新奇な物理現象・性質の発見・解明につながることが期待される。

Report

(8 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • 2020 Research-status Report
  • 2019 Research-status Report
  • 2018 Research-status Report
  • 2017 Research-status Report
  • Research Products

    (10 results)

All 2024 2023 2021 2019 2018 2017

All Journal Article (5 results) (of which Peer Reviewed: 5 results) Presentation (5 results) (of which Int'l Joint Research: 2 results)

  • [Journal Article] Simulation method for evaporative cooling of trapped Bose gases at finite temperatures2024

    • Author(s)
      E.arahata and T. Nikuni
    • Journal Title

      34th IUPAP Conference on Computational Physics

      Volume: -

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Ground-state and Excitation Spectra of Bose-;Fermi Mixtures in a Three-Dimensional Optical Lattice2019

    • Author(s)
      Rei;Hatsuda, and Emiko Arahata
    • Journal Title

      J. Phys. Soc. Jan

      Volume: 89 Issue: 2 Pages: 024601-024601

    • DOI

      10.7566/jpsj.89.024601

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] Three Sound Modes in a Bose-Fermi Superfluid Mixture at Finite Temperatures2019

    • Author(s)
      Yosuke Ono, Rei Hatsuda, Kenta Shiina, Hiroyuki Mori, and Emiko Arahata
    • Journal Title

      J. Phys. Soc. Jpn.

      Volume: 88 Issue: 3 Pages: 034003-034003

    • DOI

      10.7566/jpsj.88.034003

    • NAID

      40021839100

    • Related Report
      2018 Research-status Report
    • Peer Reviewed
  • [Journal Article] Spin Current of Fermions Induced in Spin Orbit Coupled Bose-Fermi Mixture2018

    • Author(s)
      Ryohei Sakamoto, Yosuke Ono, Emiko Arahata, and Hiroyuki Mori
    • Journal Title

      J. Phys. Soc. Jpn.

      Volume: 87 Issue: 7 Pages: 074004-074004

    • DOI

      10.7566/jpsj.87.074004

    • NAID

      40021595089

    • Related Report
      2018 Research-status Report
    • Peer Reviewed
  • [Journal Article] Ground State of Bosons in Bose-;Fermi Mixture with Spin-Orbit Coupling2017

    • Author(s)
      Ryohei Sakamoto, Yosuke Ono, Rei Hatsuda, Kenta Shiina, Emiko Arahata, and Hiroyuki Mori
    • Journal Title

      J. Phys. Soc. Jpn.

      Volume: 86 Pages: 075003-075003

    • Related Report
      2017 Research-status Report
    • Peer Reviewed
  • [Presentation] Simulation method for evaporative cooling of trapped Bose gases at finite temperatures2023

    • Author(s)
      E.arahata and T. Nikuni
    • Organizer
      CCP2023
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] シミュレーションデータを教師とした機械学習によるBose原子気体超流動の温度推定2021

    • Author(s)
      伊藤義土, 吉見一慶, 二国徹郎, 荒畑恵美子
    • Organizer
      日本物理学会 第76回年次大会
    • Related Report
      2020 Research-status Report
  • [Presentation] 三次元光格子中ボーズ-フェルミ混合系の基底状態及び励起状態の解析II2019

    • Author(s)
      初田黎, 坂本良平, 小野洋輔, 椎名拳太, 森弘之, 荒畑恵美子
    • Organizer
      日本物理学会
    • Related Report
      2018 Research-status Report
  • [Presentation] 回転するBose原子気体の蒸発冷却シミュレーション2018

    • Author(s)
      荒畑恵美子, 二国徹郎
    • Organizer
      日本物理学会
    • Related Report
      2017 Research-status Report
  • [Presentation] Formation of Vortex Lattice in Superfluid Bose Gases at Finite Temperatures2017

    • Author(s)
      Emiko Arahata and Tetsuro Nikuni
    • Organizer
      28th International Conference on Low Temperature Physics
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research

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Published: 2017-04-28   Modified: 2025-01-30  

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