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(In Japanese)量子構造を用いた遠赤外光技術の開拓と量子物性の解明

Research report code R000000728
Posted date Sep 30, 2002
  • (In Japanese)小宮山 進
  • (In Japanese)東京大学大学院総合文化研究科
Research organization
  • (In Japanese)東京大学大学院総合文化研究科
Report name (In Japanese)量子構造を用いた遠赤外光技術の開拓と量子物性の解明
Technology summary (In Japanese)遠赤外・ミリ波帯域は,固体の格子振動,半導体の不純物準位およびガス分子の振動・回転準位に対応しており,固体物理・分子科学・電波天文学,半導体量子等の分野で重要なスペクトル領域である。しかしこの領域での研究は,感度の優れた検出器が存在しないため実験が難しい。本研究では,1)量子構造を用いて遠赤外・ミリ波帯域の単一光子検出器開発と,2)開発した遠赤外光技術および従来技術を半導体量子構造の研究に応用して理解を深める,ことを目指している。平成10年度に遠赤外単一光子検出に成功し,本年度はその物理的機構の理解を深めるとともに,検出可能波長域の拡大を目指した。以下のテーマについて,進捗状況を報告する。1)遠赤外単一光子検出(磁場中量子ドットの励起状態寿命と共鳴周波数,新たな機構による単一光子の探索),2)走査型遠赤外顕微鏡の開拓,3)量子ドットによる中赤外光検出器の開拓,4)強磁場中電子系の非弾性散乱の研究など。
Research field
  • Quantum optics in general
  • Semiconductor lasers
  • Infrared photometry and photodetectors
  • Electrooptical effects, magnetooptical effects
Published papers related (In Japanese)(1)S. Komiyama, O. Astafiev, V. Antonov, H. Hirai and T. Kutsuwa, A Single-Photon Detector in the Far-Infrared Range, Nature 403, 405-407 (2000).
(2)V. Antonov, O. Astafiev, T. Kutsuwa, H. Hirai and S. Komiyama, Single FIR-Photon Detection Using a Quantum-Dot., Physica E6 (1-4), 367-370 (2000).
(3)Y. Kawano, Y. Hisanaga and S. Komiyama, Cyclotron Emission from Quantized Hall Devices: Injection of Nonequiribrium Electrons from Contacts. Phys. Rev. B59, 12537-12546 (1999).
(4)Y. Kawano and S. Komiyama, Breakdown of the Quantized Hall Effect in the Vicinity of Current Contacts, Phys. Rev. B61, 2931-2938 (2000).
(5)Y. Kawano and S. Komiyama, Local breakdown of the Quantum Hall Effect and the correlated cyclotron emission, Physica E7 (3-4), 799-803 (2000).
(6)T. Machida, S. Ishizuka, K. Muraki, Y. Hirayama and S. Komiyama, Resistance fluctuations in integer quantum-Hall transitions. Physica E6 (1-4), 152-155 (2000).
(7)T. Machida and S. Komiyama, Anomalously Weak influence of Source-Drain Voltage on Inelastic-Scattering Process in Quantum Hall Systems, Physical Review B62, 13004 (2000)
(8)S. Komiyama and Y. Kawaguchi, Heat Instability of Quantum Hall Conductors. Phys. Rev. B61, 2014-2027, (2000).
(9)K.Hirakawa and K.Yamanaka,Y.Kawaguchi,M.Endo,M.Saeki and S.Komiyama, "Far-Infrared Photoresponse of the Magnetoresistance of the Two-Dimensional Electron Systems in the Integer Quantized Hall Regime" Phys.Rev.B63(8), 085320(1-5) (2001)
(10)Y.Kawano,Y.Hisanaga,H.Takenouchi,and S.Komiyama,"Highly-Sensitive and Tunable Detection of Far-infrared Radiation by Quantum Hall Devices" J.of Appl.Phys.89, 4037-4048(2001)
(11)T.Machida,S.Ishizuka,K.Muraki,Y.Hirayama and S.Komiyama, "Resistance Fluctuations in Quantum-Hall Transitions:Network of Compressible/Incompressible Regions" Phys.Rev.B 63,045318(1-6) (2001)
(12)T.Machida and S.Komiyama, "Suppression of Scattering between Scatterring-Wave States in Integer Quantum Hall Transitions"Physica B 298,101-105 (2001)
(13)T.Machida,S.Ishizuka,K.Muraki,Y.Hirayama and S.Komiyama, "Nonequilibrium Population in Fractional Edge States"Physica B 298,150-154(2001)
(14)T.Machida,S.Ishizuka,K.Muraki,Y.Hirayama and S.Komiyama, "Scaling in Fractional Quantum-Hall Transitions" Physica B 298,182-186(2001)
(15)Y.Kawano,S.Komiyama and K..Hirakawa, "Suppression of Electron-Hole-Pair Recombination in Edge States in Quantum Hall Regimes" Physica B 298,33-37(2001)
(16)O.Astafiev,S.Komiyama and T.Kutsuwa, "Double Quantum Dots as a High Sensitive Submillimeter-Wave DEtector" Appl.Phys.Lett.79,1199-1201(2001)
(17)K.Hirakawa,K.Yamanaka,M.Endo,and S.Komiyama, "Far-Infrared Photoresponse of the Magnetoresistance of the Two-Dimensional Elwctron Systems in the Integer Quantized Hall Regime."Phys.Rev.B63,85320(2001)
(18)S.Tanibayashi,S.Komiyama,and Y.Kawaguchi, "Absence of Activation-type Conductivity in Narrow Quantum Hall Bar" J.of Physics:Condensed Matter 13,L689-L696(2001)
Research project
  • Core Research for Evolutional Science and Technology;Quantum Effects and Related Physical Phenomena
Information research report
  • (In Japanese)小宮山 進. 量子構造を用いた遠赤外光技術の開拓と量子物性の解明. 戦略的基礎研究推進事業 量子効果等の物理現象 第4回シンポジウム予稿集,2000. p.155 - 158.