Development of a fast precise measurement system using electron amplifiers

• Project/Area Number: 25610070
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Condensed matter physics I
• Research Institution: The University of Tokyo
• Principal Investigator: YAMAMOTO Michihisa 東京大学, 工学(系)研究科(研究院), 講師 (00376493)
• Project Period (FY): 2013-04-01 – 2015-03-31
• Project Status: Completed (Fiscal Year 2014)
• Budget Amount: ¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000); Fiscal Year 2014: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000); Fiscal Year 2013: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
• Keywords: 半導体物性 / 量子エレクトロニクス / 量子細線

Outline of Final Research Achievements

This work aims at realizing an on-chip avalanche current amplifier utilizing relaxation process of non-equilibrium electrons induced by the electron-electron interaction. We developed such an amplifier and achieved the amplification ratio of 9, tuning parameters for the low input current. This may allow for detecting a single propagating electron in a solid. We also developed technologies to connect this amplifier to an electron wave interferometer.

Research Products

• [Presentation] 半導体量子電子光学実験の進展 (2015)
  • Author(s): 山本倫久
  • Organizer: 日本学術振興会，先端ナノデバイス･材料テクノロジー第151委員会 研究会「量子ハイブリッドシステム」
  • Place of Presentation: 東京大学
  • Year and Date: 2015-01-23
  • Invited
• [Presentation] Quantum electron optics on depleted channels
  • Author(s): M. Yamamoto
  • Organizer: 第３回 半導体量子効果と量子情報の夏期研修会
  • Place of Presentation: 栃木、サンバレー那須
• [Remarks] 研究室ホームページ
  • URL: http://www.meso.t.u-tokyo.ac.jp/
• [Remarks] 研究室ホームページ
  • URL: http://www.meso.t.u-tokyo.ac.jp/