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Structured complex potentials for designer topological systems and devices in optics

Research Project

Project/Area Number 18F18790
Research Category

Grant-in-Aid for JSPS Fellows

Allocation TypeSingle-year Grants
Section外国
Review Section Basic Section 13020:Semiconductors, optical properties of condensed matter and atomic physics-related
Research InstitutionInstitute of Physical and Chemical Research
Host Researcher 樽茶 清悟  国立研究開発法人理化学研究所, 創発物性科学研究センター, グループディレクター (40302799)
Foreign Research Fellow DEL VALLE INCLAN YAGO BALTASAR  国立研究開発法人理化学研究所, 創発物性科学研究セ ンター, 外国人特別研究員
DEL VALLE INCLAN REDONDO YAGO BALTASAR  国立研究開発法人理化学研究所, 創発物性科学研究センター, 外国人特別研究員
Project Period (FY) 2018-11-09 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥2,100,000 (Direct Cost: ¥2,100,000)
Fiscal Year 2020: ¥800,000 (Direct Cost: ¥800,000)
Fiscal Year 2019: ¥700,000 (Direct Cost: ¥700,000)
Fiscal Year 2018: ¥600,000 (Direct Cost: ¥600,000)
Keywordstopological / exciton-polariton / non-Hermitian / superfluidity / polariton / complex lattice / Haldane model
Outline of Annual Research Achievements

Experimentally demonstrated a new technique for non-resonant temporal modulation of polariton condensates via the beating of two, frequency-locked lasers. This allows for very fast modulation, and probing of non-adiabatic regimes of carrier relaxation.

Combining the intensity beating with laser-wavefront tailoring, arbitrary spatial potentials with temporal modulation are formed. A 1D conveyor belt has been demonstrated, with the observation of tilted bands and a non-adiabatically pushed condensate. Further, using Laguerre-Gauss laser modes, preliminary measurements of a non-resonantly rotated polariton condensate were achieved.

These new techniques enable as-yet unexplored methods of creating topological states of exciton-polaritons, e.g. by rapid rotation, or by shaken optical lattices.

Research Progress Status

令和2年度が最終年度であるため、記入しない。

Strategy for Future Research Activity

令和2年度が最終年度であるため、記入しない。

Report

(3 results)
  • 2020 Annual Research Report
  • 2019 Annual Research Report
  • 2018 Annual Research Report

Research Products

(2 results)

All 2019

All Presentation (2 results) (of which Invited: 2 results)

  • [Presentation] Engineering Non-Hermitian potential landscapes in exciton-polariton microcavities2019

    • Author(s)
      Michael D. Fraser
    • Organizer
      Progress in the Mathematics of Topological States of Matter AIMR, Tohoku University, Katahira Campus, Sendai
    • Related Report
      2019 Annual Research Report
    • Invited
  • [Presentation] Engineering topological states of exciton-polaritons with non-Hermitian potentials2019

    • Author(s)
      Michael D. Fraser
    • Organizer
      International Workshop Recent Advances in Topological Photonics Korea Center for Theoretical Physics of Complex Systems (PCS) of the Institute for Basic Science, Daejeon, Korea
    • Related Report
      2019 Annual Research Report
    • Invited

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Published: 2018-11-12   Modified: 2022-12-28  

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