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2012 Fiscal Year Final Research Report

Realization of ultrafast optical switch based on exciton quantum beats

Research Project

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Project/Area Number 23656050
Research Category

Grant-in-Aid for Challenging Exploratory Research

Allocation TypeMulti-year Fund
Research Field Applied optics/Quantum optical engineering
Research InstitutionKobe University

Principal Investigator

KOJIMA Osamu  神戸大学, 大学院・工学研究科, 准教授 (00415845)

Research Collaborator KITA Takashi  神戸大学, 大学院・工学研究科, 教授
HARADA Yukihiro  神戸大学, 大学院・工学研究科, 助教
YAMASHITA Takae  神戸大学, 大学院・工学研究科, 学生
OOTA Shouhei  神戸大学, 大学院・工学研究科, 学生
GOI Keita  神戸大学, 大学院・工学研究科, 学生
林井 研  神戸大学, 大学院・工学研究科, 学生
HAMANO Shogo  神戸大学, 大学院・工学研究科, 学生
TOBITA Naoki  神戸大学, 大学院・工学研究科, 学生
TANAKA Hideharu  神戸大学, 大学院・工学研究科, 学生
井須 俊郎  徳島大学, 大学院・ソシオテクノサイエンス研究部, 教授
AKABANE Kouichi  情報通信研究機構, 主任研究員, 博士
JIN C. Y  Technische Universiteit Eindhoven, 博士
Project Period (FY) 2011 – 2012
Keywords非線形光学 / 超高速光スイッチ / 励起子 / 半導体
Research Abstract

To realize the ultrafast optical switch, the use of the quantum beat oscillation,which is the coherent oscillation of excitons induced by simultaneous excitation of two exciton states, has been proposed. In the GaAs thin film with the thickness of 110 nm, the center-of-mass motion of excitons is confined and quantized, so that the discrete levels are created. We found that the control of the probe pulse is important factor to realize and observe the quantum beats. Furthermore, measurement of the cross-correlation signal suggests that the modulation of the probe pulse is 40 %. These results are essential to realize the ultrafast optical switches based on the quantum beat with high repetition rates.

  • Research Products

    (26 results)

All 2013 2012 2011 Other

All Journal Article (9 results) (of which Peer Reviewed: 9 results) Presentation (14 results) Book (2 results) Remarks (1 results)

  • [Journal Article] Effects of pumping on propagation velocities of confined exciton polaritons in GaAs/Al_xGa_1-xAs double heterostructure thin films under resonant and non-resonant probe conditions2013

    • Author(s)
      O. Kojima, S. Ohta, T. Kita, T. Isu
    • Journal Title

      J. Appl. Phys

      Volume: 113 Pages: 013514

    • URL

      http://dx.doi.org/10.1063/1.4772717

    • Peer Reviewed
  • [Journal Article] Enhancement of optical anisotropy by interconnection effect along growth direction in multistacked quantum dots2013

    • Author(s)
      H. Tanaka, O. Kojima, T. Kita, K. Akahane
    • Journal Title

      Jpn. J. Appl. Phys

      Volume: 52 Pages: 012001

    • URL

      http://dx.doi.org/10.7567/JJAP.52.012001

    • Peer Reviewed
  • [Journal Article] Quantum beats of type-I and type-II excitons in an InxGa1-xAs/GaAs strained single quantum well2012

    • Author(s)
      O. Kojima, K. Mizoguchi, M. Nakayama
    • Journal Title

      J. Appl. Phys

      Volume: 112 Pages: 043522

    • URL

      http://dx.doi.org/10.1063/1.4748339

    • Peer Reviewed
  • [Journal Article] "Observation of quantum beat oscillations and ultrafast relaxation of excitons confined in GaAs thin films by controlling probe laser pulses2012

    • Author(s)
      S. Ohta, O. Kojima, T. Kita, T. Isu
    • Journal Title

      J. Appl. Phys

      Volume: 111 Pages: 023505

    • URL

      http://www.lib.kobe-u.ac.jp/infolib/meta_pub/G0000003kerneldetail-jp http://dx.doi.org/10.1063/1.3676429

    • Peer Reviewed
  • [Journal Article] Dynamics of above-barrier state excitons in multi-stacked quantum dots2011

    • Author(s)
      O. Kojima, N. Tobita, T. Kita, K. Akahane
    • Journal Title

      J. Appl. Phys

      Volume: 110 Pages: 093515

    • URL

      http://www.lib.kobe-u.ac.jp/infolib/meta_pub/G0000003kerneldetail-jp http://dx.doi.org/10.1063/1.3660210

    • Peer Reviewed
  • [Journal Article] Extremely uniform bound exciton states in nitrogen δ-doped GaAs studied by photoluminescence spectroscopy in external magnetic fields2011

    • Author(s)
      Y. Harada, T. Kubo, T. Inoue, O. Kojima, T. Kita
    • Journal Title

      J. Appl. Phys

      Volume: 110 Pages: 083522

    • URL

      http://www.lib.kobe-u.ac.jp/infolib/meta_pub/G0000003kerneldetail-jp http://dx.doi.org/10.1063/1.3654015

    • Peer Reviewed
  • [Journal Article] Saturation of Forster resonance energy transfer between two optically nonlinear cyanine dyes of small Stokes shift energies in polymer thin films2011

    • Author(s)
      O. Kojima, S. Hamano, T. Kita, O. Wada
    • Journal Title

      J. Appl. Phys

      Volume: 110 Pages: 083521

    • URL

      http://www.lib.kobe-u.ac.jp/infolib/meta_pub/G0000003kerneldetail-jp http://dx.doi.org/10.1063/1.3653228

    • Peer Reviewed
  • [Journal Article] Depolarization effect on optical control of exciton states confined in GaAs thin films2011

    • Author(s)
      T. Yamashita, O. Kojima, T. Kita, T. Isu
    • Journal Title

      J. Appl. Phys

      Volume: 110 Pages: 043514

    • URL

      http://www.lib.kobe-u.ac.jp/infolib/meta_pub/G0000003kerneldetail-jp http://dx.doi.org/10.1063/1.3624667

    • Peer Reviewed
  • [Journal Article] Observation of phase shifts in a vertical cavity quantum dot switch2011

    • Author(s)
      C. Jin, O. Kojima, T. Kita, O. Wada, M. Hopkinson
    • Journal Title

      Appl. Phys. Lett

      Volume: 98 Pages: 231101

    • URL

      http://dx.doi.org/10.1063/1.3596704

    • Peer Reviewed
  • [Presentation] GaAs/AlAs多重量子井戸における励起子量子ビートによる光パルス強度変調2013

    • Author(s)
      小島 磨, 林井研, 喜多隆, 赤羽浩一
    • Organizer
      日本物理学会第68回年次大会
    • Place of Presentation
      広島大学, 予稿集4, 26aXQ-4
    • Year and Date
      2013-03-26
  • [Presentation] Effect of fifth nonlinear polarization on exciton Rabi oscillation in GaAs/Al_xGa_1-xAs double heterostructure thin films2012

    • Author(s)
      O. Kojima, K. Goi, T. Kita, T. Isu
    • Organizer
      European Optical Society Annual Meeting 2012
    • Place of Presentation
      Aberdeen, UK
    • Year and Date
      2012-09-27
  • [Presentation] Control of response of exciton polariton confined in GaAs thin films by controlling pump and probe pulses2012

    • Author(s)
      O. Kojima, S. Ohta, T. Kita, T. Isu
    • Organizer
      Photon12 IOP's premier conference in optics and photonics
    • Place of Presentation
      Durham, UK
    • Year and Date
      2012-09-03
  • [Presentation] Excitation effects of confined exciton polariton on pulse shape propagating in GaAs thin films2012

    • Author(s)
      O. Kojima, S. Ohta, T. Kita, T. Isu
    • Organizer
      10th International Conferenceon Excitonic Processes in Condensed Matter, Nanostructured and Molecular Materials
    • Place of Presentation
      Groningen, the Netherlands
    • Year and Date
      2012-07-03
  • [Presentation] 半導体中の励起子非線形光学応答のコヒーレント制御2011

    • Author(s)
      小島磨
    • Organizer
      神戸大・徳島大合同セミナー半導体量子ドットと励起子の光デバイス応用
    • Place of Presentation
      徳島大学
    • Year and Date
      2011-12-27
  • [Presentation] GaAs/AlAs超格子における励起子超高速応答2011

    • Author(s)
      小島磨, 山下太香恵, 喜多隆, 赤羽浩一
    • Organizer
      第22回光物性研究会
    • Place of Presentation
      熊本大学, 論文集, IB-22
    • Year and Date
      2011-12-09
  • [Presentation] GaAs薄膜における励起子応答の光スイッチング特性2011

    • Author(s)
      大田翔平, 小島磨, 喜多隆, 井須俊郎
    • Organizer
      第22回光物性研究会
    • Place of Presentation
      熊本大学, 論文集, IA-8
    • Year and Date
      2011-12-09
  • [Presentation] Effects of fifth-order nonlinear polarization on optical control of excitonic states confined in GaAs thin films by using Rabi oscillation2011

    • Author(s)
      K. Goi, O. Kojima, T. Kita, T. Isu
    • Organizer
      Workshop on Innovation and Pioneering Technology
    • Place of Presentation
      Kobe, Japan
    • Year and Date
      2011-12-01
  • [Presentation] Switching characteristics of exciton response in GaAs thin films2011

    • Author(s)
      S. Ohta, O. Kojima, T. Kita, T. Isu
    • Organizer
      Workshop on Innovation and Pioneering Technology
    • Place of Presentation
      Kobe, Japan
    • Year and Date
      2011-12-01
  • [Presentation] GaAs薄膜における励起子状態の光制御に対する入射光エネルギー依存性2011

    • Author(s)
      五井恵太, 小島磨, 喜多隆, 井須俊郎
    • Organizer
      日本物理学会2011年秋季大会
    • Place of Presentation
      富山大学, 予稿集4, 21aRB-9
    • Year and Date
      2011-09-21
  • [Presentation] Photoluminescence dynamics of spacer layer carriers in multi stacked quantum dots2011

    • Author(s)
      O. Kojima, T. Kita, K. Akahane
    • Organizer
      12th International Conference on Optics of Excitons in Confined Systems
    • Place of Presentation
      Paris, France
    • Year and Date
      2011-09-15
  • [Presentation] Interaction of quantized exciton polaritons with nonresonant pump pulse in GaAs thin flims2011

    • Author(s)
      S. Ohta, O. Kojima, T. Kita, T. Isu
    • Organizer
      12th International Conference on Optics of Excitons in Confined Systems
    • Place of Presentation
      Paris, France
    • Year and Date
      2011-09-12
  • [Presentation] 非共鳴励起下における励起子ポラリトンと光電場の結合2011

    • Author(s)
      大田翔平, 小島磨, 喜多隆, 井須俊郎
    • Organizer
      第72回応用物理学会学術講演会
    • Place of Presentation
      山形大学, 予稿集, 1p-K-9
    • Year and Date
      2011-09-01
  • [Presentation] GaAs薄膜中の光電場に対する局所場の効果2011

    • Author(s)
      小島磨, 山下太香恵, 喜多隆, 井須俊郎
    • Organizer
      第72回応用物理学会学術講演会
    • Place of Presentation
      山形大学, 31p-P16-3
    • Year and Date
      2011-09-01
  • [Book] Quantum Dot Switches: Towards Nanoscale Power-Efficient All-Optical Signal Processing2012

    • Author(s)
      C.-Y. Jin, M. Hopkinson, O. Kojima, T. Kita, K. Akahane, O. Wada
    • Total Pages
      197-221(367)
    • Publisher
      Springer Science+Business Media New York 2012, Quantum Dot Devices, Lecture Notes in Nanoscale Science and Technology
  • [Book] InTech, Fingerprints in the Optical and Transport Properties of Quantum Dots2012

    • Author(s)
      O. Kojima
    • Total Pages
      231-244(468)
    • Publisher
      Exciton Dynamics in High Density Quantum Dot Ensembles
  • [Remarks]

    • URL

      http://www.research.kobe-u.ac.jp/eng-photonics/

URL: 

Published: 2014-09-25  

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