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Theoretical study of high dimensional physical phenomena in ultracold atomic gases

Research Project

Project/Area Number 19K21042
Project/Area Number (Other) 18H05857 (2018)
Research Category

Grant-in-Aid for Research Activity Start-up

Allocation TypeMulti-year Fund (2019)
Single-year Grants (2018)
Review Section 0202:Condensed matter physics, plasma science, nuclear engineering, earth resources engineering, energy engineering, and related fields
Research InstitutionInstitute of Physical and Chemical Research

Principal Investigator

Ozawa Tomoki  国立研究開発法人理化学研究所, 数理創造プログラム, 客員研究員 (80825993)

Project Period (FY) 2018-08-24 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Fiscal Year 2019: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2018: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Keywords冷却原子系 / 人工次元 / 人工量子系 / 物性物理 / トポロジカル物性 / 凝縮系物理
Outline of Research at the Start

近年の原子分子光物理学のテクノロジーの発展により、他の分野で知られていた様々な現象を原子分子光物理学の実験系を用いてシミュレートすることができるようになってきた。特に発展が著しいのは、従来固体電子系を舞台に発展してきた凝縮系物理の種々の現象を極低温に冷やした原子系(冷却原子系)で調べることである。本研究では、冷却原子の系において低次元系を用いて高次元物理現象を調べる「人工次元」のアイデアを発展させる。

Outline of Final Research Achievements

I proposed a new method to realize synthetic dimensions. In this proposal, I showed that electrons in a mesoscopic ring coupled to a nanomagnet are equivalent to charged particles in a two dimensional plane with a magnetic field. I also showed that related topological edge states can be observable as a persistent current through the ring. I also proposed, in ultracolod atomic setups, a method to measure topological and geometrical properties in many-body and disordered systems. I also pointed out that many-body geometric structure is related to localization of quantum states. I also wrote a review on synthetic dimensions. Finally, I also had collaborations with experimentalists, in which we measured topological and geometrical properties of quantum states in exciton-polaritons and diamond NV centers.

Academic Significance and Societal Importance of the Research Achievements

低次元系で高次元物性を調べる人工次元の方法は、凝縮系物理の適用範囲を格段に広げ、凝縮系物理が今後切り拓くべき新たな地平を与える。本研究では、冷却原子を中心に研究されてきた人工次元をメゾスコピック系という電子系に適用範囲を広げることに成功している。電子系という凝縮系物理のメインテーマに人工次元を導入することで、今後より多くの研究者が人工次元に参入する下地を与えることができたのではないかと考えている。また、人工次元に関する初めての包括的総説を書いたが、これによってより多くの研究者が人工次元研究に参入する障壁を低くすることに貢献できたのではないかとも考えている。

Report

(3 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Annual Research Report
  • Research Products

    (25 results)

All 2020 2019 2018 Other

All Int'l Joint Research (7 results) Journal Article (5 results) (of which Int'l Joint Research: 5 results,  Peer Reviewed: 5 results,  Open Access: 4 results) Presentation (13 results) (of which Int'l Joint Research: 10 results,  Invited: 9 results)

  • [Int'l Joint Research] Universite Libre de Bruxelles(ベルギー)

    • Related Report
      2019 Annual Research Report
  • [Int'l Joint Research] Universite Paris-Sud/Paris-Saclay/Universite de Lille/CNRS(フランス)

    • Related Report
      2019 Annual Research Report
  • [Int'l Joint Research] 華中科技大学(中国)

    • Related Report
      2019 Annual Research Report
  • [Int'l Joint Research] University of Birmingham/Lancaster University(英国)

    • Related Report
      2019 Annual Research Report
  • [Int'l Joint Research] Universite de Lille/Universite Paris-Sud/Paris-Saclay/CNRS(フランス)

    • Related Report
      2018 Annual Research Report
  • [Int'l Joint Research] Universite Libre de Bruxelles(ベルギー)

    • Related Report
      2018 Annual Research Report
  • [Int'l Joint Research] 華中科技大学(中国)

    • Related Report
      2018 Annual Research Report
  • [Journal Article] Active topological photonics2020

    • Author(s)
      Yasutomo Ota*, Kenta Takata, Tomoki Ozawa, Alberto Amo, Zhetao Jia, Boubacar Kante, Masaya Notomi, Yasuhiko Arakawa and Satoshi Iwamoto*
    • Journal Title

      Nanophotonics

      Volume: 9 Issue: 3 Pages: 547-567

    • DOI

      10.1515/nanoph-2019-0376

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Topological quantum matter in synthetic dimensions2019

    • Author(s)
      Ozawa Tomoki、Price Hannah M.
    • Journal Title

      Nature Reviews Physics

      Volume: 1 Issue: 5 Pages: 349-357

    • DOI

      10.1038/s42254-019-0045-3

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Type-III and Tilted Dirac Cones Emerging from Flat Bands in Photonic Orbital Graphene2019

    • Author(s)
      Milicevic M.、Montambaux G.、Ozawa T.、Jamadi O.、Real B.、Sagnes I.、Lemaitre A.、Le Gratiet L.、Harouri A.、Bloch J.、Amo A.
    • Journal Title

      Physical Review X

      Volume: 9 Issue: 3 Pages: 031010-031010

    • DOI

      10.1103/physrevx.9.031010

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Probing localization and quantum geometry by spectroscopy2019

    • Author(s)
      Ozawa Tomoki、Goldman Nathan
    • Journal Title

      Physical Review Research

      Volume: 1 Issue: 3

    • DOI

      10.1103/physrevresearch.1.032019

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Experimental measurement of the quantum geometric tensor using coupled qubits in diamond2019

    • Author(s)
      Yu Min、Yang Pengcheng、Gong Musang、Cao Qingyun、Lu Qiuyu、Liu Haibin、Zhang Shaoliang、Plenio Martin B、Jelezko Fedor、Ozawa Tomoki、Goldman Nathan、Cai Jianming
    • Journal Title

      National Science Review

      Volume: 7 Issue: 2 Pages: 254-260

    • DOI

      10.1093/nsr/nwz193

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] Non-Hermitian topology in active nematics2020

    • Author(s)
      Tomoki Ozawa
    • Organizer
      Topological phenomena in non-Hermitian and non-equilibrium systems, Tohoku University, Japan
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 冷却原子系における時間周期的変調を用いた局在および多体の量子幾何テンソルの理論研究2020

    • Author(s)
      Tomoki Ozawa, Nathan Goldman
    • Organizer
      日本物理学会第75回年次大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Topological photonics with synthetic dimensions2019

    • Author(s)
      Tomoki Ozawa
    • Organizer
      Recent Advances in Topological Photonics, PCS IBS, Daejeon, South Korea
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Topological and geometrical effects in the bulk Hall response of driven-dissipative photonic lattices2019

    • Author(s)
      Tomoki Ozawa
    • Organizer
      2019 Conference on Lasers & Electro-Optics / Europe and European Quantum Electronics Conference (CLEO / Europe-EQEC), Munich, Germany
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] (Revisiting) ultracold Bose gases with Rashba spin-orbit coupling2019

    • Author(s)
      Tomoki Ozawa
    • Organizer
      Workshop on Quantum Mixtures and celebration of the 70th anniversary of Sandro Stringari, Trento, Italy
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Theory and experiment of multi-orbital photonic graphene2019

    • Author(s)
      Tomoki Ozawa
    • Organizer
      Workshop on Topological Photonics and Beyond 2019, Tianjin, China
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Probing quantum geometry and localization through periodic driving2019

    • Author(s)
      Tomoki Ozawa
    • Organizer
      Bose-Einstein Condensation 2019, Sant Feliu de Guixols, Spain
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Probing topology and geometry through periodic shaking in ultracold atomic gases and beyond2019

    • Author(s)
      Tomoki Ozawa
    • Organizer
      The Fourth Kyoto-Beijing-Tokyo Workshop on Ultracold Atomic Gases, Yukawa Institute for Theoretical Physics, Kyoto University, Japan
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Probing topology, geometry, and localization through fluctuation-dissipation theorem in ultracold atomic gases and beyond2019

    • Author(s)
      Tomoki Ozawa
    • Organizer
      East Asia Joint Seminars on Statistical Physics 2019, Chinese Academy of Science, Institute of Physics, Beijing, China
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] トポロジカル・フォトニクスとトポロジカル・レーザー2019

    • Author(s)
      小澤知己
    • Organizer
      日本物理学会 第74回年次大会 シンポジウム講演
    • Related Report
      2018 Annual Research Report
    • Invited
  • [Presentation] Theory and experiment of multi-orbital photonic graphene2018

    • Author(s)
      Tomoki Ozawa
    • Organizer
      Variety and universality of bulk-edge correspondence in topological phases: From solid state physics to transdisciplinary concepts [ BEC2018X ], University of Tsukuba Tokyo Campus, Tokyo, Japan
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Topology and Chiral Physics in Atomic, Molecular, and Optical Systems2018

    • Author(s)
      Tomoki Ozawa
    • Organizer
      Workshop on Recent Developments in Chiral Matter and Topology, National Taiwan University, Taiwan
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] トポロジカル・レーザーの進展2018

    • Author(s)
      小澤知己
    • Organizer
      非平衡系・非エルミート系の新奇量子現象、京都大学基礎物理学研究所
    • Related Report
      2018 Annual Research Report
    • Invited

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Published: 2018-08-27   Modified: 2024-03-26  

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