Confinement of photons and cooperative light-electron dynamics in artificial atoms

• Project/Area Number: 15K05396
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Physical chemistry
• Research Institution: Nihon University
• Principal Investigator: SAKO Tokuei 日本大学, 理工学部, 准教授 (60361565)
• Project Period (FY): 2015-04-01 – 2018-03-31
• Project Status: Completed (Fiscal Year 2017)
• Budget Amount: ¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000); Fiscal Year 2017: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000); Fiscal Year 2016: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000); Fiscal Year 2015: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
• Keywords: 人工原子 / 光物質相互作用 / マックスウェル方程式 / 電子波束 / シンプレクティック積分法 / 過渡電流 / レーザー場 / ドレスト状態 / 量子開放系 / 量子ドット / 光と物質の相互作用 / マックスウェル-シュレディンガー / FDTD / 光閉じ込め / 波動関数 / 閉じ込め

Outline of Final Research Achievements

We have developed a computational system for simulating dynamics of light-coupled artificial atoms for future applications to nano-optical devices. Maxwell's equations and the time-dependent Schroedinger equation that are responsible respectively for the propagation of the electromagnetic field and of the electrons have been solved relying on the finite difference time domain method and on the symplectic integrator method, respectively. The developed computational system has been applied to investigate the dynamics of electrons in artificial atoms subjected to incident laser pulses.

Research Products

• [Int'l Joint Research] Max-Planck-Institute for Astrophysics(Germany)
• [Int'l Joint Research] University of Waterloo(Canada)
• [Journal Article] Field induced transient current in one-dimensional nanostructure (2018)
  • Author(s): T. Sako and H. Ishida
  • Journal Title: Physica E Volume: 101 Pages: 256-264
  • DOI: 10.1016/j.physe.2018.04.011
  • Peer Reviewed
• [Journal Article] A simple formula to predict the influence of the near-field in the optical control of confined electron systems (2017)
  • Author(s): T. Takeuchi, S. Ohnuki, T. Sako
  • Journal Title: Journal of Physics B: Atomic Molecular and Optical Physics Volume: 50 Issue: 4 Pages: 1-13
  • DOI: 10.1088/1361-6455/aa55f4
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Maxwell-Schroedinger hybrid simulation for optically controlling quantum states: A two-level system manipulated by a light pulse pair (2016)
  • Author(s): T. Takeuhi, S. Ohnuki, and T. Sako
  • Journal Title: The Radio Science Bulletin Volume: 356
  • Peer Reviewed / Acknowledgement Compliant
• [Presentation] Near-field effect in nanostructured materials in the coupled Maxwell-Schroedinger approach (2017)
  • Author(s): T. Sako
  • Organizer: EMN EAST Meeting 2017
  • Place of Presentation: Siem Reap, Cambodia
  • Year and Date: 2017-03-05
  • Int'l Joint Research / Invited
• [Presentation] Near-field effect in optically controlling simple quantum systems (2017)
  • Author(s): Tokuei Sako
  • Organizer: Computational Chemistry Symposium in ICCMSE2017, Thessaloniki, Greece
  • Int'l Joint Research / Invited
• [Presentation] Radiation reaction in the coupled Maxwell-Schroedinger simulation (2017)
  • Author(s): Tokuei Sako
  • Organizer: EMN Summer Meeting 2017, Havana, Cuba
  • Int'l Joint Research / Invited
• [Presentation] The coupled Maxwell-Schroedinger approach to photonics applications (2017)
  • Author(s): Tokuei Sako
  • Organizer: EMN Meeting on Photonics 2017, Budapest, Hungary
  • Int'l Joint Research / Invited
• [Presentation] Maxwell-Schroedinger approach to light-nanomatter interaction (2016)
  • Author(s): T. Sako
  • Organizer: 2016 EMN Meeting on Quantum Matter
  • Place of Presentation: Port Louis, Mauritius
  • Year and Date: 2016-11-30
  • Int'l Joint Research / Invited
• [Presentation] Spin- and electron-configuration-dependence of transient electric current in nanostructured materials fabricated with multi-terminals (2016)
  • Author(s): T. Sako
  • Organizer: BIT's 6th Annual World Congress of Nano Science & Technology
  • Place of Presentation: Singapore, Singapore
  • Year and Date: 2016-10-26
  • Int'l Joint Research / Invited
• [Presentation] Time dependent transient current dynamics in one-dimensional nanostructures fabricated with multi-terminals (2016)
  • Author(s): T. Sako
  • Organizer: EMN Croatia Meeting 2016
  • Place of Presentation: Dubrovnik, Croatia
  • Year and Date: 2016-05-04
  • Int'l Joint Research / Invited
• [Presentation] Theoretical framework for light-matter interaction in finite quantum systems (2016)
  • Author(s): Tokuei Sako
  • Organizer: Computational Chemistry Symposium in ICCMSE2016
  • Place of Presentation: Athens, Greece
  • Year and Date: 2016-03-17
  • Int'l Joint Research / Invited
• [Presentation] Time-dependent electron wave packet dynamics for transient current in nanostructured materials induced by ultrashort laser pulses (2016)
  • Author(s): Tokuei Sako
  • Organizer: BIT's 2nd Annual World Congress of Smart Materials
  • Place of Presentation: Singapore, Singapore
  • Year and Date: 2016-03-04
  • Int'l Joint Research / Invited
• [Presentation] Spin dependent electron wave packet dynamics in nanowire induced by ultrashort laser pulses (2015)
  • Author(s): Tokuei Sako
  • Organizer: 2015 EMN Open Access Week Meeting
  • Place of Presentation: Chengdu, China
  • Year and Date: 2015-09-22
  • Int'l Joint Research / Invited
• [Presentation] Electron correlation and dynamics in laser induced transient current in quasi-one-dimensional nanostructure (2015)
  • Author(s): Tokuei Sako
  • Organizer: EMN Phuket Meeting
  • Place of Presentation: Phuket, Tailand
  • Year and Date: 2015-05-04
  • Int'l Joint Research / Invited
• [Funded Workshop] Computational Chemistry Symposium in ICCMSE2016 (2016)
  • Place of Presentation: Athens, Greece
  • Year and Date: 2016-03-17