Cavity QED of GaAs quantum double rings

2010 Fiscal Year Final Research Report

• Project/Area Number: 20340080
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Condensed matter physics I
• Research Institution: National Institute for Materials Science
• Principal Investigator: SAKODA Kazuaki National Institute for Materials Science, 量子ドットセンター, センター長 (90250513)
• Research Collaborator: KURODA Takashi 独立行政法人物質・材料研究機構, 量子ドットセンター, 主幹研究員 (00272659) ; MANO Takaaki 独立行政法人物質・材料研究機構, 量子ドットセンター, 主任研究員 (60391215) ; SUGIMOTO Yoshimasa 独立行政法人物質・材料研究機構, 量子ドットセンター, 主席研究員 (60415784)
• Project Period (FY): 2008 – 2010
• Keywords: GaAs / 量子リング / 量子ドット / フォトニック結晶 / QED

Research Abstract

To give a definite experimental proof of the cavity QED (quantum electrodynamics) effect of GaAs nano particles, we performed self-assembly of nano particles, fabrication of photonic crystal microcavities, characterization by micro spectroscopy, theoretical analysis of electronic states and electromagnetic modes, and studies on relevant applications. We proved the Purcell effect, or acceleration of photon emission, for GaAs nano particles embedded in photonic crystal microcavities with lattice constants around 200 nm. We also achieved high crystal quality by improvement of the self-assembling technique, so we succeeded for the first time in lasing by current injection with GaAs nano particles. In addition, we clearly demonstrated doubly enhanced spontaneous emission due to the small group velocity of photon at photonic band edges.

Research Products

• [Journal Article] Energy renormalization of exciton complexes in self-assembled GaAs/Al_<1-x>Ga_xAs quantum dots (2010)
  • Author(s): M.Abbarchi, T.Kuroda, T.Mano, K.Sakoda, C.A.Mastrandrea, A.Vinattieri, M.Gurioli, T.Tsuchiya
  • Journal Title: Physical Review B Vol.82 Pages: 201301(R)(1-4)
  • Peer Reviewed
• [Journal Article] Enhanced spon- taneous emission observed at one-dimen -sional photonic band edges (2010)
  • Author(s): K.Kuroda, T.Sawada, T.Kuroda, K.Watanabe, K.Sakoda
  • Journal Title: Journal of Optical Society of America B Vol.27,No.1 Pages: 45-50
  • Peer Reviewed
• [Journal Article] Self-assembly of symmetric GaAs quantum dots on (111)A substrates : suppression of fine-structure splitting (2010)
  • Author(s): T.Mano, M.Abbarchi, T.Kuroda, B.McSkimming, A.Ohtake, K.Mitsuishi, K.Sakoda
  • Journal Title: Applied Physics Express Vol.3 Pages: 065203(1-3)
  • Peer Reviewed
• [Journal Article] Ultra-narrow emission from single GaAs self-assembled quantum dots grown by droplet epitaxy (2009)
  • Author(s): T.Mano, M.Abbarchi, T.Kuroda, C.A.Mastrandrea, A.Vinattieri, S.Sanguinetti, K.Sakoda, M.Gurioli
  • Journal Title: Nanotechnology Vol.20,No.39 Pages: 395601(1-5)
  • Peer Reviewed
• [Journal Article] Elect- ronic structure of GaAs/AlGaAs quantum double rings in lateral electric field (2009)
  • Author(s): Y.Yao, T.Ochiai, T.Mano, T.Kuroda, T.Noda, N.Koguchi, K.Sakoda
  • Journal Title: Chinese Optics Letters Vol.7,No.10 Pages: 882-885
  • Peer Reviewed
• [Journal Article] Purcell effect of GaAs quantum dots by photonic crystal microcavities (2009)
  • Author(s): K.Sakoda, T.Kuroda, N.Ikeda, T.Mano, Y.Sugimoto, T.Ochiai, K.Kuroda, S.Ohkouchi, N.Koguchi, K.Asakawa
  • Journal Title: Chinese Optics Letters Vol.7,No.10 Pages: 879-881
  • Peer Reviewed
• [Journal Article] Doubly enhanced spontaneous emission due to increased photon density of states at photonic band edge frequencies (2009)
  • Author(s): K.Kuroda, T.Sawada, T.Kuroda, K.Watanabe, K.Sakoda
  • Journal Title: Optics Express Vol.17,No.15 Pages: 13168-13177
  • Peer Reviewed
• [Journal Article] GaAs/AlGaAs quantum dot laser fabri- cated on GaAs(311)A substrate by droplet epitaxy (2008)
  • Author(s): T.Mano, T.Kuroda, K.Mitsuishi, Y.Nakayama, T.Noda, K.Sakoda
  • Journal Title: Applied Physics Letters Vol.93,No.20 Pages: 203110(1-3)
  • Peer Reviewed
• [Journal Article] Acceleration and suppression of photoemission of GaAs quantum dots em- bedded in photonic crystal microcavities (2008)
  • Author(s): T.Kuroda, N.Ikeda, T.Mano, Y.Sugimoto, T.Ochiai, K.Kuroda, S.Ohkouchi, N.Koguchi, K.Sakoda, K.Asakawa
  • Journal Title: Applied Physics Letters Vol.93,No.11 Pages: 111103(1-3)
  • Peer Reviewed
• [Presentation] 液滴エピタキシにより作製したGaAs量子ドットの電流注入発振 (2011)
  • Author(s): 定昌史,間野高明,迫田和彰
  • Organizer: 応用物理学関係連合講演会
  • Place of Presentation: 神奈川工科大学(厚木市)
  • Year and Date: 2011-03-24
• [Presentation] 液滴エピタキシー法による量子ドット創製の最近の進展 (2011)
  • Author(s): 迫田和彰
  • Organizer: 先端光ICTシンポジウム
  • Place of Presentation: 東京ビッグサイト(東京)
  • Year and Date: 2011-02-18
• [Presentation] フォトニック結晶共振器の基礎とCavity QEDへの応用 (2010)
  • Author(s): 迫田和彰
  • Organizer: 原子・分子・光科学討論会
  • Place of Presentation: つくば国際会議場(つくば市)
  • Year and Date: 2010-06-12
• [Presentation] Lifetime control of GaAs quantum dots by photonic crystal microcavities (2009)
  • Author(s): K.Sakoda, T.Kuroda, N.Ikeda, T.Mano, Y.Sugimoto, T.Ochiai, K.Kuroda, S.Ohkouchi, N.Koguchi, K.Asakawa
  • Organizer: OSA Con- ference on Nanophotonics
  • Place of Presentation: ハルピン(中国)
  • Year and Date: 2009-05-13
• [Presentation] Laser Spectroscopy of GaAs QDs Made by Droplet Epitaxy (2008)
  • Author(s): 迫田和彰
  • Organizer: Advanced Laser Technologies
  • Place of Presentation: ショフォーク(ハンガリー)
  • Year and Date: 2008-09-14
• [Book] Progress in Optics(Vol.54, Chapter 3)(Science and Engineering of Photonic Crystals) (2009)
  • Author(s): K.Sakoda ,J.W.Haus
  • Total Pages: 271-317
  • Publisher: Elsevier