Single-Photon Generation and Detection and Its Conversion to Electron Spin States for Quantum Information Applications

• Project/Area Number: 17068001
• Research Category: Grant-in-Aid for Scientific Research on Priority Areas
• Allocation Type: Single-year Grants
• Review Section: Science and Engineering
• Research Institution: Hokkaido University
• Principal Investigator: SUEMUNE Ikuo Hokkaido University, 電子科学研究所, 教授 (00112178)
• Co-Investigator(Kenkyū-buntansha): INOUE Shuichiro 日本大学, 理工学部, 教授 (30307798) ; UESUGI Katsuhiro 室蘭工業大学, 工学部, 准教授 (70261352) ; KUMANO Hidekazu 北海道大学, 電子科学研究所, 准教授 (70292042)
• Project Period (FY): 2005 – 2008
• Project Status: Completed (Fiscal Year 2008)
• Budget Amount: ¥69,500,000 (Direct Cost: ¥69,500,000); Fiscal Year 2008: ¥13,900,000 (Direct Cost: ¥13,900,000); Fiscal Year 2007: ¥17,400,000 (Direct Cost: ¥17,400,000); Fiscal Year 2006: ¥20,800,000 (Direct Cost: ¥20,800,000); Fiscal Year 2005: ¥17,400,000 (Direct Cost: ¥17,400,000)
• Keywords: 量子ドット / 単一光子源 / 単一光子検出器 / 量子状態変換 / 電子スピン / 円偏光 / 量子鍵配送 / 光ファイバー通信波長帯 / InAs量子ドット / 微小光共振器 / 荷電励起子 / 量子リング / フォトニック結晶 / 単一光子発生 / 量子暗号通信 / III-V-N系 / ひずみ補償 / ひずみ超格子 / 量子もつれ合い / 偏光相関 / 光ファイバー通信 / InAs / 窒化物混晶 / 光子アンチバンチング / 光子相関測定 / 量子暗号

Research Abstract

量子情報通信では、量子情報を伝送する光子状態とこれを量子情報処理することが期待されている電子スピン状態の量子情報変換が重要である。これまでに励起子状態を準共鳴励起することにより、入射円偏光状態を92.100%の量子効率で電子スピン状態に変換し、再度電子スピンから同じ円偏光状態に変換することを試みた。その結果、全体としての量子効率として92%という高い値を達成した。これは量子情報変換を実現する基礎となる。
光子の検出に関しては、InGaAs APD を正弦波変調することにより、アフターパルスなどの雑音発生を防ぎ、単一光子検出器の動作を800MHz まで高速化したが,この高速光子検出器を使ってNTT と共同で量子鍵配送実験を行った。これによって、15km の通信距離では鍵生成率1.5Mビット/秒、ビットエラー率2.3%の高性能を実現した。

Research Products

• [Journal Article] Superconductor-based Light Emitting Diode: Demonstration of Role of Cooper Pairs in Radiative RecombinationProcesses (2008)
  • Author(s): Y. Hayashi, K. Tanaka, T. Akazaki, M. Jo, H. Kumano, and I. Suemune
  • Journal Title: Appl.Phys.Express 1
  • Peer Reviewed
• [Journal Article] Fourier Spectroscopy of Decoherence of Exciton and Their Complexes in Single InAlAs QuantumDots (2008)
  • Author(s): S. Adachi, H. Sasakura, N. Yatsu, R. Kaji, K. Yamada, S. Muto, H. Kumano, I. Suemune
  • Journal Title: phys.stat.sol cVol.5,(Issue1) Pages: 351-355
  • Peer Reviewed
• [Journal Article] Role of Cooper Pairs for theGenerationofEntangledPhotonPairsfromSingleQuantum Dots (2008)
  • Author(s): I. Suemune, T. Akazaki, K. Tanaka, M. Jo, K. Uesugi, M. Endo, H. Kumano, and E. Hanamura
  • Journal Title: MicroelectronicsJournal Vol.39 Pages: 344-347
  • Peer Reviewed
• [Journal Article] Highly Circular-polarized Single Photon Generation from a SingleQuantumDotat ZeroMagnetic Field (2008)
  • Author(s): H.Kobayashi,H.Kumano,M.Endo,M.Jo,I.Suemune,H.Sasakura, S. Adachi, and S. Muto
  • Journal Title: MicroelectronicsJournal Vol.39 Pages: 327-330
  • Peer Reviewed
• [Journal Article] SinglePhotonEmission with High Degree of Circular Polarization from a Single Quantum Dot Under Zero Magnetic Field (2008)
  • Author(s): H. Kumano, H. Kobayashi, Y. Hayashi, M. Jo, I. Suemune, H.Sasakura,S.Adachi,andS.Muto
  • Journal Title: Physica E Vol. 40 Pages: 1824-1827
  • Peer Reviewed
• [Journal Article] Electron EffectiveMassandMobilityinHeavilyDopedn-Ga(AsN)Probed by Raman Scattering (2008)
  • Author(s): J.Ibanez,R.Cusco,E.Alarcon-Llado,L.Artus,A.Patane, D. Fowler, L. Eaves, K. Uesugi, and I. Suemune
  • Journal Title: Journal of Applied Physics Vol. 103
  • Peer Reviewed
• [Journal Article] Spin-flip Quenching in Trion State Mediated by Optical Phonons in a Single Quantum Dot (2008)
  • Author(s): H. Kumano, S. Ekuni, H. Kob ayashi, H. Sasakura, I. Suemun e, S. Adachi, S. Muto
  • Journal Title: phys. stat. sol. B246 Pages: 775-778
  • Peer Reviewed
• [Journal Article] Highly Circular-polarized Single Photon Generation from a Single Qu antum Dot at Zero Magnetic Field (2008)
  • Author(s): H. Kobayashi, H. Kumano, M. Endo, M. Jo, I. Suemune, H. Sasakura, S. Adachi, S. Muto
  • Journal Title: Microelectronics Journal 39 Pages: 327-330
  • Peer Reviewed
• [Journal Article] Optical-phonon Mediated Exciton Energy Relaxation with Highly Pres erved Spin States in a Single Quantum Dot (2008)
  • Author(s): H. Kumano, H. Kobayashi, S. Ekuni, Y. Hayashi, M.Jo, H. Sasakura, S. Adachi, S. Muto, I. Suemune
  • Journal Title: Phys. Rev. B 78
  • Peer Reviewed
• [Journal Article] Role of Cooper Pairs for the Generation of Entangled Photon Pairs from Single Quantum Dots (2008)
  • Author(s): I. Suemune, T. Akazaki, K. Tanaka, M. Jo, K. Uesugi, M. Endo, H. Kumano, E. Hanamura
  • Journal Title: Microelectronics Journal Vol.39 Pages: 344-347
  • Peer Reviewed
• [Journal Article] Fabrication and Characterization of a High Q Microdisc Laser Using InAs Quantum Dot Active Regions (2007)
  • Author(s): P. Thilakan, G. Sasikala, and I. Suemune
  • Journal Title: Nanotechnology Vol.18
  • Peer Reviewed
• [Journal Article] Detailed Measurements of Nuclear Spin Polarizations in a Single InAlAs Quantum Dot Through Overhauser Shift of Photoluminescece (2007)
  • Author(s): R. Kaji, S. Adachi, H. Sasakura, S. Muto, H. Kumano, and I.Suemune
  • Journal Title: J. Supercond. Nov. Magn Vol. 20 Pages: 447-451
  • Peer Reviewed
• [Journal Article] Fabrication and Characterization of a High Q Microdiso Laser Using InAs Quantum Dot Active Regions (2007)
  • Author(s): P. Thilakan, G. Sasikala, I. Suemune
  • Journal Title: Nanotechnology Vol.18
  • Peer Reviewed
• [Journal Article] Detailed Measurements of Nuclear Spin Polarizations in a Single InAlAs Quantum Dot Through Overhauser Shift of Photoluminescece (2007)
  • Author(s): R. Kaji, S. Adachi, H. Sasakura, S. Muto, H. Kumano, I. Suemune
  • Journal Title: J.Supercond.Nov.Magn. Vol.20 Pages: 447-451
  • Peer Reviewed
• [Journal Article] Anisotropic Lattice Deformation of InAs Self-assembled Quantum Dots Embedded in GaNAs Strain Compensating Layers (2006)
  • Author(s): N.Matsumura,S.Muto,S.Ganapathy,I.Suemune,K.Numata, and K. Yabuta
  • Journal Title: Jpn. J. Appl. Phys. Lett Vol. 45, No.2
  • Peer Reviewed
• [Journal Article] Role of a NitrogenPrecursorSuppliedonInAs QuantumDotsSurfacesin TheirEmissionWavelengths (2006)
  • Author(s): I.Suemune,G.Sasikala,H.Kumano,K.Uesugi,Y.Nabetani, T. Matsumoto, J.-T. Maeng, and T.-Y. Seong
  • Journal Title: Jpn. J. Appl.Phys Vol. 45,No.21
  • Peer Reviewed
• [Journal Article] Application of InGaAs/GaAsN Strain-compensated Superlattice to InAs Quantum Dots (2006)
  • Author(s): W.Zhang,K.Uesugi,and I.Suemune
  • Journal Title: J. Appl. Phys Vol. 99, No.10 Pages: 1031031-7
  • NAID: 120000954316
  • Peer Reviewed
• [Journal Article] Triggered Single Photon Emission and Cross-correlation Properties in InAlAs Quantum Dot (2006)
  • Author(s): H. Kumano, S. Kimura, M. Endo, I. Suemune, H. Sasakura, S. Adachi, S. Muto, H. Z. Song, S. Hirose, and T. Usuki
  • Journal Title: Physica E Vol. 32 Pages: 144-147
  • NAID: 120000957502
  • Peer Reviewed
• [Journal Article] Deterministic Single-photon and Polarization-correlated Photon-pair Generations from a Single InAlAs Quantum Dot (2006)
  • Author(s): H. Kumano, S. Kimura, M. Endo, H. Sasakura, S. Adachi, S. Muto,and I.Suemune
  • Journal Title: Journal of Nanoelectronics and Optoelectronics Vol.1 Pages: 39-51
  • NAID: 120000952930
  • Peer Reviewed
• [Journal Article] Origin of Asymmetric Splitting of a Neutral Exciton in a Single Semiconductor Quantum Dot (2006)
  • Author(s): I. Suemune, H. Kumano, S. Kimura, H. Sasakura, S. Adachi, S. Muto, H. Z. Song, S. Hirose, and T. Usui
  • Journal Title: phys. Stat. sol cVol. 3, No. 11 Pages: 3908-3911
  • Peer Reviewed
• [Journal Article] Iriggered Single photon Emission and Cross-correlation Properties in InAIAs Quantum Dot (2006)
  • Author(s): H.Kumano, S.Kimura, M.Endo, I.Suemune, H.Sasakura, S.Adachi, S.Muto, H.Z.Song, S.Hirose, T Usuki
  • Journal Title: Physica E : Low-Dimensional Systems ＆ Nano-Structures Vol. 32 Pages: 144-147
• [Journal Article] Deterministic single-photon and Polarization-correlated Photon-pair Generations from a Single InAIAs Quantum Dot (2006)
  • Author(s): Hidekazu Kumano, Satoshi Kimura, Michiaki Endo, Hirotaka Sasakura, Satoru Adachi, Shunichi Muto, Ikuo Suemune
  • Journal Title: Journal of Nanoelectronics and Optoelectronics Vol. 1 Pages: 39-51
• [Journal Article] Origin of Asymmetric Splitting of a Neutral Exciton in a Single Semiconductor Quantum Dot (2006)
  • Author(s): I.Suemune, H.Kumano, S.Kimura, H.Sasakura, S.Adachi, S.Muto, H.Z.Song, S.Hirose, T.Usui
  • Journal Title: phys. stat. sol. (c) 3 No. 11 Pages: 3908-3911
• [Journal Article] Superconductor-based Quantum-dot Light-emitting Diodes (SQ-LED) : Role of Cooper-pairs to Generate Entangled Photon Pairs (2006)
  • Author(s): I.Suemune, I.Akazaki, K.Ianaka, M.Jo, K.Uesugi, M.Endo, H.Kumano, E.Hanamura, H.Takayanagi, M.Yamanishi, H.Kan
  • Journal Title: Japan. J. Appl. phys Vol. 45, No.12 Pages: 9264-9271
• [Journal Article] Overhauser Shift in Photoluminescence of Excitons with Fine Structure from a Single Self-assembled InAIAs Quantum Dot (2006)
  • Author(s): I.Mukumoto, R.Kaji, H.SasaKura, S.Adachi, H.Kumano, S.Muto, I.Suemune
  • Journal Title: phys. stat. sol. (c) Vol. 3, No. 12 Pages: 4372-4375
• [Journal Article] Time-resolved Photoluminescence in Annealed Self-assembled InAs Quantum Dots (2006)
  • Author(s): H.Nishida, S.Kayamori, H.Sasakura, S.Adachi, S.Muto, I.Suemune
  • Journal Title: phys. stat. sol. (c) Vol. 3, No. 12 Pages: 4299-4302
• [Journal Article] Anisotropic Lattice Deformation of InAs Self-assembled Quantum Dots Embedded in GaNAs Strain Compensating Layers (2006)
  • Author(s): N.Matsumura, S.Muto, S.Ganapathy, I.Suemune, K.Numata, K.Yabuta
  • Journal Title: Jpn.J.Appl.Phys.Lett. Vol.45, No.2
• [Journal Article] Theoretical Studies of Strain States in InAs QuantumDotsandDependenceonTheirCappingLayers (2005)
  • Author(s): Y. Nabetani, T. Matsumoto, G. Sasikala, X. Q. Zhang, and I. Suemune
  • Journal Title: J.Appl. Phys Vol. 98, No. 6
  • Peer Reviewed
• [Journal Article] Photon Antibunching Observed from an InAlAs Single Quantum Dot (2005)
  • Author(s): S. Kimura, H. Kumano, M. Endo, I. Suemune, T. Yokoi, H. Sasakura, S. Adachi, S. Muto, H. Z. Song, S. Hirose, and T. Usuki
  • Journal Title: Jpn. J. Appl. Phys. Express Lett Vol. 44, No.25
  • NAID: 210000059660
  • Peer Reviewed
• [Journal Article] Photon-spin Qubit-conversion Based on Overhauser Shift of Zeeman Energies in Quantum Dots (2005)
  • Author(s): S. Muto, S. Adachi, T. Yokoi, S. Kayamori, H. Sasakura, and I.Suemune
  • Journal Title: Appl. Phys. Lett Vol. 87, No. 11
  • Peer Reviewed
• [Journal Article] Structural and Luminescence Properties of InAs Quantum Dots: Effect of NitrogenExposureonDotSurfaces (2005)
  • Author(s): G. Sasikala, I. Suemune, P. Thilakan, H. Kumano, and K. Uesugi,Y.Nabetani,T.MatsumotoandH.Machida
  • Journal Title: Jpn.J.Appl.Phys.Lett Vol. 44, No. 50
  • Peer Reviewed
• [Journal Article] DynamicNuclearPolarizationinaSelf-Assembled InAlAsDot (2005)
  • Author(s): S. Adachi, T. Yokoi, H. Sasakura, S. Muto, H. Kumano, and I.Suemune
  • Journal Title: phys.stat.sol cVol.2,No.11 Pages: 3838-3842
  • Peer Reviewed
• [Journal Article] Single-PhotonGenerationfromInAlAsSingleQuantum Dot (2005)
  • Author(s): S. Kimura, H. Kumano, M. Endo, I. Suemune, T. Yokoi, H. Sasakura, S. Adachi, S. Muto, H. Z. Song, S. Hirose, and T. Usuki
  • Journal Title: phys.stat.sol cVol.2,No.11 Pages: 3833-3837
  • Peer Reviewed
• [Journal Article] Photon Antibunching Observed from an InAlAs Single Quantum Dot (2005)
  • Author(s): S.Kimura, H.Kumano, M.Endo, I.Suemune, T.Yokoi, H.Sasakura, S.Adachi, S.Muto, H.Z.Song S.Hirose, T.Usuki
  • Journal Title: Jpn.J.Appl.Phys.Express Lett. Vol.44 No.25
  • NAID: 210000059660
• [Journal Article] Theoretical Studies of Strain States in InAs Quantum Dots and Dependence on Their Capping Layers (2005)
  • Author(s): Y.Nabetani, T.Matsumoto, G.Sasikala, X.Q.Zhang, I.Suemune
  • Journal Title: J.Appl.Phys.Vol.9 Vol.98 No.6
• [Journal Article] Single-Photon Generation from InAlAs Single Quantum Dot (2005)
  • Author(s): S.Kimura, H.Kumano, M.Endo, I.Suemune, T.Yokoi, H.Sasakura, S.Adachi, S.Muto, H.Z.Song, S.Hirose, T.Usuki
  • Journal Title: phys.stat.sol.(c) No.11 Pages: 3833-3837
  • NAID: 120000954426
• [Journal Article] Improved Structural and Luminescence Homogeneities of InAs Quantum Dots with Nitrogen-precursor Supplies on Their Surfaces (2005)
  • Author(s): S.Sasikala, I.Suemune, P.Thilakan, H.Kumano, K.Uesugi, Y.Nabetani, T.Matsumoto, H.Machida
  • Journal Title: Jpn.J.Appl.Phys.Lett. Vol.44, No.50
• [Presentation] Photon Generations from Semiconductor Quantum Dots and Their Applications to Next-Generation Information Technology (2008)
  • Author(s): I.Suemune, H. Kumano, Y. Hayashi, M. Jo, and Y. Idutsu
  • Organizer: 2008 International Symposium on Global COE ProgramofCenterforNext-GenerationInformationTechnology based on Knowledge Discovery and Knowledge Federation
  • Place of Presentation: Sapporo, Japan
• [Presentation] Development of Nanofabrication Techniques for Nanophotonic Structures andDevices (2008)
  • Author(s): Y. Idutsu, H. Sato, S. Ito, and I. Suemune
  • Organizer: 2008RIES-Symposium,Sapporo,Japan
  • Place of Presentation: Sapporo,Japan
• [Presentation] New Light Emitting Diode with Superconducting Electrodes (2008)
  • Author(s): I. Suemune, Y. Hayashi, K. Tanaka, T. Akazaki, M. Jo, and H. Kumano
  • Organizer: 2008 Japanese-German-Spanish Joint Workshop, Workshop on Frontier Photonic and Electronic Materials and Devices
  • Place of Presentation: Hakone,Kanagawa,Japan
• [Presentation] Optical-phonon Mediated Efficient Spin-state Transfer Between Electron Spin and Photon Polarization with a Single Quantum Dot without External Field (2008)
  • Author(s): H.Kumano,S.Ekuni,H.Kobayashi,H.Sasakura,I.Suemune, S. Adachi, and S. Muto
  • Organizer: International conference on Physics of Light-Matter CouplinginNanostructures(PLMCN8)
  • Place of Presentation: Tokyo,Japan
• [Presentation] Nuclear Field-mediated Measurement of Effective g factors of Quantum Dots (2008)
  • Author(s): S. Adachi, R. Kaji, K. Yamada, S. Muto, H. Sasakura, H. Kumano, I. Suemune
  • Organizer: International conference on Physics of Light-Matter Coupling in Nanostructures (PLMCN8)
  • Place of Presentation: Tokyo, Japan
• [Presentation] Spin-flip Quenching during Energy RelaxationProcessesMediatedbyOptical-phononsinaSingle Quantum Dot (2008)
  • Author(s): H.Kumano,H.Kobayashi,S.Ekuni,H.Sasakura,I.Suemune, S. Adachi, and S. Muto
  • Organizer: 5th International Conf. on Semiconductor QuantumDots
  • Place of Presentation: Gyeongju,Korea
• [Presentation] ObservationofEnhancedLuminescence Emitted from InAs Quantum Dots with Direct Contact to Superconducting Niobium Stripe (2008)
  • Author(s): M.Takada,Y.Idutsu,Y.Hayashi,T.Akazaki,H.Sasakura, H.Kumano,I.Suemune
  • Organizer: 5th International Conf. on SemiconductorQuantumDots
  • Place of Presentation: Gyeongju,Korea
• [Presentation] Improved LuminescenceEfficiencyofInAsQuantumDotsGrownonAtomic Terraced GaAs Surfaces Prepared with In-situ Chemical Etching (2008)
  • Author(s): Y. Idutsu, S. Miyamura, and I. Suemune
  • Organizer: 5th International Conf. on Semiconductor Quantum Dots
  • Place of Presentation: Gyeongju, Korea
• [Presentation] Reduced Fine Structure Splitting of Excitons in Self-assembled InAs/GaAs Quantum Rings (2008)
  • Author(s): M. Jo, Y. Hayashi, H. Sasakura, H. Kumano, I. Suemune, S. Adachi, S. Muto, S. Suraprapapich, and C. W. Tu
  • Organizer: 5th International Conf. on Semiconductor Quantum Dots
  • Place of Presentation: Gyeongju,Korea
• [Presentation] Luminescence of n-InGaAs/p-InP Diode with Superconducting Nb Electrode (2008)
  • Author(s): Y.Hayashi, K. Tanaka, T. Akazaki, M. Jo, H. Kumano, and I. Suemune
  • Organizer: The 20th IEEE Conference on IndiumPhosphideandRelatedMaterials(IPRM'08)
  • Place of Presentation: Versailles, France
• [Presentation] SuperconductingEffectonRadiative Recombinations in Long-wavelength Light Emitting Diode (2008)
  • Author(s): H.Sasakura,Y.Hayashi,K.Tanaka,T.Akazaki,S.Kuramitsu, H.Kumano,I.Suemune
  • Organizer: 66th Device Research Conference
  • Place of Presentation: University of California, Santa Barbara, CA
• [Presentation] Photon-stateConversionwithWell-definedSpin States in a Single Quantum Dot Without Magnetic Field (2008)
  • Author(s): H. Kumano, S. Ekuni, H. Sasakura, I. Suemune, S. Adachi, andS.Muto
  • Organizer: 29th International Conference on the Physics of Semiconductors
  • Place of Presentation: Rio de Janeiro, Brazil
• [Presentation] InAs Quantum Dots with Direct Contact to Niobium Electrode : Enhancement of Luminescence Intensity Below Superconducting Critical Temperature (2008)
  • Author(s): Y.Idutsu,M.Takada,Y.Hayashi,T.Akazaki,H.Sasakura, H. Kumano, and I. Suemune
  • Organizer: The 15th International Conference on Molecular Beam Epitaxy
  • Place of Presentation: UniveristyofBritishColumbia,Vancouver,Canada
• [Presentation] Conversion from Type-II to Type-I Transition due to Sb Composition in GaAsSb/GaAs Single Quantum Wells (2008)
  • Author(s): M. Sato, M. Jo, and I. Suemune
  • Organizer: The 15th International Conference on Molecular Beam Epitaxy
  • Place of Presentation: Univeristy of British Columbia, Vancouver, Canada
• [Presentation] Interdisciplinary Research on Superconducting Photonics and Develop ment of LEDs based on New Concept (2008)
  • Author(s): I. Suemune
  • Organizer: Japan-Brazil Memorial Symposium on Science on Science and Technology (Invited)
  • Place of Presentation: Sao Paulo, Brazil
• [Presentation] Photon Generation Processes from Single Quantum Dots (2007)
  • Author(s): Ikuo Suemune
  • Organizer: International Symposium for the Promotion of Academic Exchange
  • Place of Presentation: Sapporo
  • Year and Date: 2007-03-22
• [Presentation] Spin Splitting of Neutral Exciton Emission from A Single Quantum Dot (2007)
  • Author(s): H.Kobayashi,H.Kumano,M.Endo,I.Suemune,H.Sasakura, S. Adachi, and S. Muto
  • Organizer: The 8th RIES-Hokudai International Symposium
  • Place of Presentation: Sapporo
• [Presentation] Highly Circular-polarized Photon Generationfrom aSingle QuantumDot atZeroMagnetic Field (2007)
  • Author(s): H.Kobayashi,H.Kumano,M.Endo,I.Suemune,H.Sasakura, S. Adachi, and S. Muto
  • Organizer: SixthInternationalConferenceonLowDimensionalStructures and Devices
  • Place of Presentation: San Andres, Mexico
• [Presentation] Role of Cooper Pairs for theGenerationofEntangledPhotonPairsfromSingleQuantum Dots (2007)
  • Author(s): I. Suemune, T. Akazaki, K. Tanaka, M. Jo, K. Uesugi, M. Endo, H. Kumano, and E. Hanamura
  • Organizer: Sixth International Conference on Low Dimensional StructuresandDevices(LDSD2007)
  • Place of Presentation: SanAndres,Columbia
• [Presentation] Surface Passivation Effect of Electron-beam Resist on InAs Quantum Dots and Their Improved Luminescence Efficiency (2007)
  • Author(s): Y. Idutsu, M. Endo, K. Uesugi, and I. Suemune
  • Organizer: 19th International Conference on Indium Phosphide and Related Materials (IPRM'07)
  • Place of Presentation: Matsue, Japan
• [Presentation] Growth ProcessofGaAsCapLayersonGaSb/GaAsQuantumDotSurfaces (2007)
  • Author(s): K. Uesugi, M. Sato, Y. Idutsu, and I. Suemune
  • Organizer: 19th International Conference on Indium Phosphide and Related Materials (IPRM'07)
  • Place of Presentation: Matsue, Japan
• [Presentation] HighDegreeofCircular PolarizationSinglePhotonEmissionfromaSingleQuantumDot Under Non-Resonant Excitation and Zero Magnetic Field (2007)
  • Author(s): H. Kumano,H. Kobayashi,Y. Hayashi,M. Endo,I.Suemune, H.Sasakura,S.Adachi,andS.Muto
  • Organizer: International Conference on Electronic Properties of Two-Dimensional Systems and Modulated Semiconductor Structures
  • Place of Presentation: Genova, Italy
• [Presentation] FourierSpectroscopyofDecoherenceofExciton and Exciton Complexes in Single InAlAs Quantum Dots (2007)
  • Author(s): N. Yatsu, S. Adachi, H. Sasakura, S. Muto, H. Kumano, and I.Suemune
  • Organizer: 15th InternationalConferenceonNonequilibriumCarrierDynamics in Semiconductors
  • Place of Presentation: Tokyo
• [Presentation] LO Photon-Plasmon Coupled Modes and Carrier Mobilities in Heavily Se-doped Ga(As, N) Thin Films (2007)
  • Author(s): J.Ibanez,E.Alarcon-Llado,R.Cusco,L.Artus,D.Fowler, A. Patane, K. Uesugi, and I. Suemune
  • Organizer: The International Conference on Optical, Optoelectronic and Photonic Materials and Applications (ICOOPMA2007)
  • Place of Presentation: London
• [Presentation] LuminescenceObservedfromAJunctionField-Effect Transistor with Nb/n-InGaAs/Nb Josephson Junction (2007)
  • Author(s): Y.Hayashi, K. Tanaka, T. Akazaki, H. Kumano, and I. Suemune
  • Organizer: 34th International Symposium on Compound Semiconductors
  • Place of Presentation: Kyoto, Japan
• [Presentation] Differential Resistance Oscillations in a Superconductor-semiconductor Junctions (2007)
  • Author(s): H.Takayanagi,R.Inoue,T.Akazaki,K.Tanaka,M.Jo,and I. Suemune
  • Organizer: International Symposium on Advanced Nanodevices and Nanotechnology
  • Place of Presentation: Waikoloa, Hawaii, USA
• [Presentation] Possibility of Semiconductor-based Single Photon Sources for Quantum Information Networks (2007)
  • Author(s): I. Suemune
  • Organizer: International Conference on Microwaves and Optoelectronics(ICMO2007)
  • Place of Presentation: Aurangabad,India
• [Presentation] Origin of Asymmetric Splitting of a Neutral Exciton in a Single Semiconductor Quantum Dot (2006)
  • Author(s): I. Suemune,H.Kumano, S. Kimura, H.Sasakura, S. Adachi, S. Muto, H. Z. Song, S. Hirose, and T. Usuki
  • Organizer: 4th International Conference on Quantum Dots
  • Place of Presentation: Chamonix-Mont Blanc, France
• [Presentation] Influence ofStrain Modulations in CappingLayersof InAsQuantum Dots withCompressive-InGaAsandTensile-GaAsNLayerStructures (2006)
  • Author(s): WeiZhang,KatsuhiroUesugi,andIkuoSuemune
  • Organizer: TMS2006ElectronicMaterialsConference
  • Place of Presentation: PennsylvaniaState University, PA, USA
• [Presentation] Discrimination of isoelectronic centers and type-II quantum dots with ZnTe embeddedinZnSe (2006)
  • Author(s): M.Jo, M.Endo, H.Kumano,andI. Suemune
  • Organizer: TMS2006ElectronicMaterialsConference
  • Place of Presentation: Pennsylvania State University, PA, USA
• [Presentation] PolarizationPreservationbetween PhotonPairsfromaBiexciton-ExcitonCascadedDecayProcess in a Single InAlAs Quantum Dots (2006)
  • Author(s): H. Kumano, S. Kimura, M. Endo, S. Adachi, H. Sasakura, S.Muto,andI.Suemune
  • Organizer: 28th International Conference on the Physics of Semiconductors
  • Place of Presentation: Vienna, Austria
• [Presentation] Optically Pumped Nuclear Spin Polarization in a Self-assembled Quantum Dot (2006)
  • Author(s): T. Mukumoto, T.Yokoi, S. Adachi, H.Sasakura, H. Kumano, S. Muto and I. Suemune
  • Organizer: 4th International Conference on Physics and Applications of Spin-related Phenomena in Semiconductors (PASPS-IV)
  • Place of Presentation: Sendai
• [Presentation] Time-resolvedPhotoluminescenceinAnnealed Self-assembled InAs Quantum Dots (2006)
  • Author(s): H. Nishida,S.Kayamori,H. Sasakura,S.Adachi, S. Muto, andI.Suemune
  • Organizer: 4th International Conference on Physics and Applications of Spin-related Phenomena in Semiconductors (PASPS-IV)
  • Place of Presentation: Sendai
• [Presentation] Superconductor-based Quantum-dot Light Emitting Diodes (SQLED) - Role of Cooper-pairs in the RecombinationProcessesinQuantumDots (2006)
  • Author(s): I. Suemune
  • Organizer: WorkshoponPhoton and Spins : Their Generation, Manipulation, and Detection
  • Place of Presentation: Sapporo
• [Presentation] Anisotropic Lattice Deformation of InAs Self-assembled Quantum Dots Strain Compensated with GaAsN BuryingLayers (2005)
  • Author(s): N.Matsumura,S.Muto,S.Ganapathy,I.Suemune,K.Numata, and K. Yabuta
  • Organizer: 47thTMS2005ElectronicMaterialsConference
  • Place of Presentation: University of California Santa Barbara
• [Presentation] Overhauser Shift in a Self-assembled Quantum Dot (2005)
  • Author(s): University of California Santa Barbara
  • Organizer: Spintech III
  • Place of Presentation: Awaji Island
• [Presentation] Highly Pure Single Photon Generation from Single Quantum Dot (2005)
  • Author(s): S. Kimura, H. Kumano, M. Endo, I. Suemune, T. Yokoi, H. Sasakura, S. Adachi, S. Muto, H. Z. Song, S. Hirose, and T. Usuki
  • Organizer: 5th International Conference on Physics of Light-MatterCouplinginNanostructures
  • Place of Presentation: Glasgow,Scotland
• [Presentation] BrightLuminescence from InAs/GaAs Open Quantum Dots at Room Temperature : Dependence on GaAs Surface Reconstructions (2005)
  • Author(s): K.Uesugi,W.Zhang,andI.Suemune
  • Organizer: The 23rd International Conference on Defects in Semiconductors(ICDS-23)
  • Place of Presentation: Awaji Island, Hyogo
• [Presentation] Strain-compensation of InAs Quantum Dots: Dot Size Dependence (2005)
  • Author(s): W.Zhang, K.Uesugi, N.Matsumura, and I.Suemune
  • Organizer: InternationalConferenceonQuantumElectronics 2005 and the Pacific Rim Conference on Lasers and Electro-Optics2005(IQEC/CLEO-PR2005)
  • Place of Presentation: Tokyo
• [Presentation] Correlations and Anti-bunching of a Charged Exciton State and Exciton and Biexciton States in a Single Quantum Dot (2005)
  • Author(s): H. Kumano, S. Kimura, M. Endo, I. Suemune, H. Sasakura, S. Adachi, S. Muto, H. Z. Song, S. Hirose, and T. Usuki
  • Organizer: ModulatedSemiconductorStructure(MSS12)
  • Place of Presentation: Albuquerque,USA
• [Presentation] Relations of Neutral and Charged Excitons in a Single Quantum Dot Studied with Dynamic and Photon Correlation Measurements (2005)
  • Author(s): Hidekazu Kumano, Satoshi Kimura, Michiaki Endo, Ikuo Suemune, Hirotaka Sasakura,Satoru Adachi, Shun-ichi Muto, Hai Zhi Song, Shin-ichi Hirose, Tatsuya Usuki
  • Organizer: 9th Optics of Excitons in Confined Systems and 2nd International Conference on Spontaneous Coherence in Excitonic Systems
  • Place of Presentation: Southampton, UK
• [Book] Modern Wide Bandgap Semiconductors and Related Optoelectronic Devices (2007)
  • Author(s): I. Suemune
  • Total Pages: 500
  • Publisher: Springer-Verlag
• [Book] Modern Wide Bandgap Semiconductors and Related Optoelectronic Devices Edited by K. Takahashi, A. Sandhu, and A. Yoshikawa Chapters5 5. 1. 1 Wide bandgap single photon device pp. 281-287 (2007)
  • Author(s): H.Kumano, I.Suemune
  • Total Pages: 630
  • Publisher: Springer-Verlag
• [Book] "Dilute Nitride Semiconductors" Chapter 4 "MOMBE- Growth and Characterization of III-V-N Compounds and Application to InAs Quantum Dots"(edited by M.Henini) (2005)
  • Author(s): I.Suemune, K.Uesugi, S.Ganapathy
  • Total Pages: 630
  • Publisher: Elsevier Ltd.
• [Remarks]
  • URL: http://opmac06.es.hokudai.ac.jp/
• [Remarks]
  • URL: http://nanophoto.es.hokudai.ac.jp/