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2012 Fiscal Year Final Research Report

Opical manipulation excitonic matter phase

Planned Research

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Project AreaOptical science of dynamically correlated electrons in semiconductors
Project/Area Number 20104002
Research Category

Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area)

Allocation TypeSingle-year Grants
Review Section Science and Engineering
Research InstitutionThe University of Tokyo

Principal Investigator

GONOKAMI Makoto  東京大学, 大学院・理学系研究科, 教授 (70161809)

Co-Investigator(Kenkyū-buntansha) NAKA Nobuko  京都大学, 理学研究科, 准教授 (10292830)
Project Period (FY) 2008 – 2012
Keywords光物性 / 半導体物性 / 物性理論 / 材料化学 / 量子エレクトロニクス
Research Abstract

We investigated quantum degenerate matter phases of photo-generated electrons and holes in semiconductor materials and explored and developed techniques to control and manipulate such systems. Major achievements include the successful observation of the Bose-Einstein phase transition of excitons created and confined in a three-dimensional trap in a bulk direct-gap semiconductor. In an attempt to further stabilize the condensate phase, an ultracold quantum degenerate gas of excitons was then created by cooling it down with a dilution refrigerator. Also, we developed an excitation scheme for the cold electron-hole system in diamond, a wide-gap indirect semiconductor. It led to the discovery of the polyexciton bound state in the low temperature regime, formed as a result of the suppression of electron-hole droplet formation. Furthermore, a high-order photon correlation acquisition system using a streak camera was developed as a method to measure the photon statistics in an ultrafast timescale. Using this, we detected an oscillation, induced by the relaxation oscillation phenomena, of the second-order correlation function for a vertical cavity surface emitting laser in the vicinity of the laser threshold. Moreover, we explored a new method to control material excitations using waveform-shaped pulses. We focused particularly on the conservation of quasi-angular momentum in Raman-type processes in crystals possessing three-fold rotational symmetries. As a result, an unrestrained control of magnon spin states and THz polarizations was demonstrated by shaping optical pulses as vector waves and thus regulating temporal characteristics of their polarization states.

  • Research Products

    (36 results)

All 2013 2012 2011 2010 2009 Other

All Journal Article (10 results) (of which Peer Reviewed: 10 results) Presentation (9 results) Book (9 results) Remarks (8 results)

  • [Journal Article] Selection rules for angular momentum transfer via impulsive stimulated Raman scattering2013

    • Author(s)
      T. Higuchi, H. Tamaru, and M. Kuwata-Gonokami
    • Journal Title

      Phys. Rev. A

      Volume: 87 (1) Pages: 013808/1-5

    • Peer Reviewed
  • [Journal Article] Fast periodic modulations in the photon correlation of single-mode vertical-cavity surface-emitting lasers2012

    • Author(s)
      N. Takemura, J. Omachi and M. Kuwata-Gonokami
    • Journal Title

      Phys. Rev. A

      Volume: 85 (5) Pages: 053811/1-5

    • Peer Reviewed
  • [Journal Article] Relaxation explsion of a quantum degenerate exciton gas in Cu_2O2012

    • Author(s)
      K. Yoshioka and M. Kuwata-Gonokami
    • Journal Title

      New Journal of Physics

      Volume: 14 Pages: 055024 -1-14

    • Peer Reviewed
  • [Journal Article] Time-resolved cyclotron resonance in cuprous oxide2012

    • Author(s)
      N. Naka, I. Akimoto, M. Shirai, and K. Kanno
    • Journal Title

      Phys. Rev. B

      Volume: 85 (3) Pages: 035209-1-6

    • Peer Reviewed
  • [Journal Article] Transition to a Bose-Einstein condensate and relaxation explosion of excitons at sub-Kelvin temperatures2012

    • Author(s)
      K. Yoshioka, E. Chae, and M. Kuwata-Gonokami
    • Journal Title

      Nat. Commun

      Volume: 2 Pages: 328

    • Peer Reviewed
  • [Journal Article] The vectorial control of magnetization by light2011

    • Author(s)
      N. Kanda, T. Higuchi, H. Shimizu, K. Konishi, K. Yoshioka, and M. Kuwata-Gonokami
    • Journal Title

      Nat. Commun

      Volume: 2 Pages: 362

    • Peer Reviewed
  • [Journal Article] Circularly Polarized Light Emission from Semiconductor Planar Chiral Nanostructures2011

    • Author(s)
      K. Konishi, M. Nomura, N. Kumagai, S. Iwamoto, Y. Arakawa, and M. Kuwata-Gonokami
    • Journal Title

      Phys. Rev. Lett

      Volume: 106 (5) Pages: 057402/1-4

    • Peer Reviewed
  • [Journal Article] Selection rules for light-induced magnetization of a crystal with threefold symmetry": The case of antiferromagnetic NiO2011

    • Author(s)
      T. Higuchi, N. Kanda, H. Tamaru, and M. Kuwata-Gonokami
    • Journal Title

      Phys. Rev. Lett

      Volume: 106 (4) Pages: 047401-1-4

    • Peer Reviewed
  • [Journal Article] Quantum inelastic collisions between paraexcitons in Cu_2O2010

    • Author(s)
      K. Yoshioka, T. Ideguchi, Andre Mysyrowicz, and M. Kuwata-Gonokami
    • Journal Title

      Phys. Rev. B

      Volume: 82 Pages: 041201(R)-1-4

    • Peer Reviewed
  • [Journal Article] Density-dependent exciton kinetics in synthetic diamond crystals2009

    • Author(s)
      N. Naka, J. Omachi, H. Sumiya, K. Tamasaku, T. Ishikawa, and M. Kuwata-Gonokami
    • Journal Title

      Phys. Rev. B

      Volume: 80 (3) Pages: 035201-1-7

    • Peer Reviewed
  • [Presentation] Search for exciton BEC in a bulk crystal2012

    • Author(s)
      M. Kuwata-Gonokami
    • Organizer
      ICSCE (The 6th International Conference on Spontaneous Coherence in Ezcitonic Systems)
    • Place of Presentation
      Stanford, California, U.S.A,
    • Year and Date
      2012-08-30
  • [Presentation] Bose-Einstein condensation transition of paraexcitons in a potential trap at sub-Kelvin temperatures2012

    • Author(s)
      M. Kuwata-Gonokami
    • Organizer
      EXCON 2012 (The 10th International Conference on Excitonic Processes in Condensed Matter, Nanostructured and Molecular Materials)
    • Place of Presentation
      Groningen, Netherlands
    • Year and Date
      2012-07-02
  • [Presentation] Polarization control with artificial chiral structures2012

    • Author(s)
      M. Kuwata-Gonokami
    • Organizer
      8th EOS Topical Meeting on Diffractive Optics 2012(DO2012)
    • Place of Presentation
      Delft, Netherlands
    • Year and Date
      2012-03-01
  • [Presentation] Relaxation explosion of a Bose-Einstein condensate of excitons in Cu_2O2011

    • Author(s)
      M. Kuwata-Gonokami
    • Organizer
      Fundamental Optical Properties of Semiconductor -2011
    • Place of Presentation
      North Carolina, U.S.A
    • Year and Date
      2011-08-04
  • [Presentation] Experimental aspects of exciton-exciton interactions and of exciton BEC" School and Congerence "Cold Atoms2011

    • Author(s)
      M. Kuwata-Gonokami
    • Organizer
      Semiconductor Polaritons and Nanotechnology"
    • Place of Presentation
      albatros Hotel, Chersonissos, Crete, Greece
    • Year and Date
      2011-05-03
  • [Presentation] Stability of an ensemble of excitons in a quantum degenerate regime in a bulk semiconductor of Cu_2O, - Search for Bose-Einstein Condensation of excitons2011

    • Author(s)
      M. Kuwata-Gonokami
    • Organizer
      The 41th Winter Colloquium on the PHYSICS of QUANTUM ELECTRONICS
    • Place of Presentation
      Snowbird, U.S.A
    • Year and Date
      2011-01-03
  • [Presentation] Advanced photons for condensed matter2010

    • Author(s)
      M. Kuwata-Gonokami
    • Organizer
      The 4th Yamada Symposium Advanced Photon and Science Evolution
    • Place of Presentation
      Osaka, Japan
    • Year and Date
      2010-06-14
  • [Presentation] Strong optical activity in planner chiral grating Structures2010

    • Author(s)
      M. Kuwata-Gonokami
    • Organizer
      Optical Society of Korea 20th Anniversary and Winter Annual Meeting 2010
    • Place of Presentation
      KAIST, KOREA
    • Year and Date
      2010-01-21
  • [Presentation] Coherent control of resonant two-photon excitation of cold excitons by phase modulated pulses, CLEO/Pacific Rim 20092009

    • Author(s)
      M. Kuwata-Gonokami
    • Organizer
      The 8th Pacific Rim Conference on Lasers and Electro-Optics
    • Place of Presentation
      Shanghai, Chinese
    • Year and Date
      2009-09-01
  • [Book] 半導体プロセスを用いた小型円偏光発光素子の開発, レーザー加工学会誌 Vol.19, No.12012

    • Author(s)
      小西邦昭, 五神真
    • Total Pages
      68-70
    • Publisher
      一般社団法人レーザー加工学会
  • [Book] 半導体励起子のボース・アインシュタイン凝縮, 日本物理学会誌 第67巻, 第01号2012

    • Author(s)
      吉岡孝高, 五神真
    • Total Pages
      44
    • Publisher
      一般社団法人日本物理学会
  • [Book] Trailing Quantum Phases in Solids Using Light-Matter Interaction, NOVA book "New Developments in Photon and Materials Research2012

    • Author(s)
      N. Naka
    • Total Pages
      19
  • [Book] Terahertz Spectroscopy and Imaging (Springer Series in Optical Sciences)2012

    • Author(s)
      K. Peiponen, A. Zeitler, M. Kuwata-Gonokami (Eds.)
    • Publisher
      Springer
  • [Book] 光によるコヒーレントな磁化制御における結晶対称性の役割, 固体物理 Vol.46, No.112011

    • Author(s)
      樋口卓也, 五神真
    • Total Pages
      711-723
    • Publisher
      株式会社アグネ技術センター
  • [Book] バルク半導体における励起子BEC相の探索, 固体物理 Vol.46, No.112011

    • Author(s)
      吉岡孝高, 五神真
    • Total Pages
      593-604
    • Publisher
      株式会社アグネ技術センター
  • [Book] High-Density Excitons in Semiconductors. In: Bhattacharya P, Fornari R, Kamimura H, (eds.), Comprehensive Semiconductor Science and Technology, volume 22011

    • Author(s)
      M. Kuwata-Gonokami
    • Total Pages
      213-255
    • Publisher
      Amsterdam: Elsevier
  • [Book] "Optical Manipulation of Excitonic Particles into a quantum degenerate regime", Quantum Coherence in Solid State Systems, International School of Physics "Enrico Fermi", Course CLXXI, Vol.1712009

    • Author(s)
      M. Kuwata-Gonokami
    • Total Pages
      343-373
    • Publisher
      IOS press, Amsterdam
  • [Book] ナノ格子による巨大旋光性, 応用物理782009

    • Author(s)
      小西邦昭, 五神真
    • Total Pages
      531-535
    • Publisher
      公益社団法人応用物理学会
  • [Remarks]

    • URL

      http://www.dyce-opt.org

  • [Remarks]

    • URL

      http://www.gono.t.u-tokyo.ac.jp

  • [Remarks] 1. M. Kuwata-Gonokami: 2013 Fellow of Optical Society of America, Citation: For contributions to laser spectroscopy and photon science including nonlinear spectroscopy of semiconductors, high density phenomena, cold atoms and micro cavity structures., OSA

  • [Remarks] 2. M. Kuwata-Gonokami: 2012 Fellow of American Physical Society, Division of Laser Science, Citation: For contributions to laser spectroscopy and photon science including nonlinear spectroscopy of semiconductors, high density phenomena, cold atoms and micro cavity structures., APS

  • [Remarks] 3. 今井亮, 神田夏輝,鄭渚,小西邦昭,五神 真:第32回(2012年春季)応用物理学会講演奨励賞「非線形光学結晶を用いたテラヘルツベクトルビームの発生」

  • [Remarks] 4. T. Higuchi received Young Investigator Award in Gordon Research Conference (Ultrafast Phenomena in Cooperative Systems 2012)

  • [Remarks] 5. 吉岡孝高:平成23年度日本物理学会若手奨励賞受賞(領域5)(2011年11月)

  • [Remarks] 6. 五神真:第14回 松尾学術賞「レーザー分光法による固体における光量子物理学の研究」2010年10月28日

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Published: 2014-08-29  

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