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Representation of coupled quantum dots by nonlinear stochastic ordinary equation and its application to simulation of THz communication system

Research Project

Project/Area Number 19K04394
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 21020:Communication and network engineering-related
Research InstitutionHiroshima City University

Principal Investigator

Fujisaka Hisato  広島市立大学, 情報科学研究科, 教授 (30305784)

Co-Investigator(Kenkyū-buntansha) 桑田 精一  広島市立大学, 情報科学研究科, 准教授 (80275403)
Project Period (FY) 2019-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
Fiscal Year 2021: ¥520,000 (Direct Cost: ¥400,000、Indirect Cost: ¥120,000)
Fiscal Year 2020: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2019: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Keywords通信システム / 量子力学系 / 数理モデル / 量子ドット結合系 / テラヘルツ波 / 量子井戸 / 非線形確率微分方程式 / 無線通信
Outline of Research at the Start

テラヘルツ(THz)帯域無線通信技術に関する研究の大半は従来の高周波回路技術をTHz帯域に超高周波化するものである.本研究は,高周波回路技術ではなく量子力学的現象に基づく高速かつ小型・低電力なTHz帯無線通信系を構成するための礎を,次の2項目を達成することによって築くものである.
(1)コンピュータシミュレーションに適した量子的通信系の数学モデルを構築する
(2)このモデルを用いたシミュレーションにより量子的通信系およびそれに適した時空符号化・復号化方式を確立する

Outline of Final Research Achievements

This research discusses a possibility whether or not quantum mechanical high speed terahertz(THz) communication systems employing spatiotemporal coding can be constructed. Mathematical model of quantum communication units are developed based on the stochastic quantization as an evaluation tool of the communication systems. The receiver units for the communication are designed by arranging GaAs or nano-carbon quantum dots circularly. The results of computer simulation by using the mathematical model imply that quantum mechanical THz communication systems using Galois field LDPC, quadrature modulation, and orbital angular momentum multiplexing can be constructed.

Academic Significance and Societal Importance of the Research Achievements

スマート社会に不可欠なデジタル無縁通信はミリ波やテラへルツ(THz)波の帯域にまで拡大されようとしている.また,スマート機器やIoT機器に内蔵される無縁通信モジュールの小型化や省電力化が求められている.これを達成するためには,従来の高周波技術の延長線上ではなく量子力学系を応用したTHz帯送受信系を検討することが重要となる.本研究は,独自の数理モデルを用いたコンピュータシミュレーションにより,100G bpsに迫るTHz帯域近接通信の可能性を示唆した.

Report

(5 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (18 results)

All 2022 2021 2020 2019

All Journal Article (2 results) (of which Peer Reviewed: 2 results,  Open Access: 1 results) Presentation (16 results) (of which Int'l Joint Research: 11 results)

  • [Journal Article] A classical particle model equivalent stochastically to Pauli spinor2022

    • Author(s)
      Ibuki Nakamura1 and Hisato Fujisaka
    • Journal Title

      Journal of Computational Electronics

      Volume: online Issue: 3 Pages: 1-10

    • DOI

      10.1007/s10825-022-01883-z

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Wave-to-particle representation transformation for single-electrons on graphene2020

    • Author(s)
      N. Hirami, I. Nakamura, H. Fujisaka
    • Journal Title

      Nonlinear Theory and Its Applications, IEICE

      Volume: 11 Issue: 4 Pages: 501-516

    • DOI

      10.1587/nolta.11.501

    • NAID

      130007921442

    • ISSN
      2185-4106
    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] Consideration of Behavior of Single-Electron in Periodic Potential Receiving THz waves2022

    • Author(s)
      Ibuki Nakamura and Hisato Fujisaka
    • Organizer
      2022 IEEE Workshop on Nonlinear Circuit Networks
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Behavior of Electrons in Periodic Potentials Excited by OAM Waves2021

    • Author(s)
      Ibuki Nakamura1 and Hisato Fujisaka
    • Organizer
      2021 IEEE Workshop on Nonlinear Circuit Networks
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] Spherical Chaos of Electron State: Irregularly Varying Orientation of Spin Interacting with Orbit2021

    • Author(s)
      Ren Yamanaka and Hisato Fujisaka
    • Organizer
      2021 IEEE Workshop on Nonlinear Circuit Networks
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] On the Invariant Curve of the Poincare Map of Excited Multi-Well Quantum System2020

    • Author(s)
      I. Nakamura and H. Fujisaka
    • Organizer
      International Symposium on Nonlinear Theory and Its Applications
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] Circuit simulation of coupled RTD oscillator to generate OAM wave with arbitrary mode2020

    • Author(s)
      K. Oyaizu, T. Hamao, H. Fujisaka, and M. Yamauchi
    • Organizer
      IEEE Workshop on Nonlinear Circuit Networks
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] Stochastic spin dynamics of an electron governed by the Pauli Equation2020

    • Author(s)
      I. Nakamura and H. Fujisaka
    • Organizer
      IEEE Workshop on Nonlinear Circuit Networks
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] スピン-磁場相互作用を考慮した電子の確率的古典粒子モデル2020

    • Author(s)
      中村伊吹,藤坂尚登
    • Organizer
      信学技報 (NLP)
    • Related Report
      2020 Research-status Report
  • [Presentation] 拡大ガロア体GF(2^q)における離散フーリエ変換に関する考察2020

    • Author(s)
      山縣亮太,中村伊吹,藤坂尚登
    • Organizer
      信学技報 (NLP)
    • Related Report
      2020 Research-status Report
  • [Presentation] 位相波伝搬を伴うTHz帯域軌道角運動量通信用RTD結合発振器のシミュレーション2020

    • Author(s)
      小柳津恭志,濱尾知也,藤坂尚登,山内将行
    • Organizer
      信学技報 (NLP)
    • Related Report
      2020 Research-status Report
  • [Presentation] Classical Particle Model of an Electron in a Potential Generated by a Magnetic Field2020

    • Author(s)
      Ibuki Nakamura and Hisato Fujisaka
    • Organizer
      Korean Japan Workshop on Complex Communication Systems
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Phase-inversion Traveling on THz Waveband Coupled RTD Oscillators2020

    • Author(s)
      Takahiro Kitagawa, Kyoshi Oyaizu, Tomoya Hamano, Masayuki Yamauchi, and Hisato Fujisaka
    • Organizer
      Korean Japan Workshop on Complex Communication Systems
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] ナノカーボン電子の確率的古典粒子モデルに関する考察2019

    • Author(s)
      早川翔太 中村伊吹 藤坂尚登
    • Organizer
      電子情報通信学会非線形問題研究会
    • Related Report
      2019 Research-status Report
  • [Presentation] GF(2^q)LDPC 復合回路の階層化の試み2019

    • Author(s)
      安田明義 藤坂尚登 神尾武司
    • Organizer
      電子情報通信学会非線形問題研究会
    • Related Report
      2019 Research-status Report
  • [Presentation] Long Periodic Walk of a Single-Electron in a Set of Electrically Excited Quantum DotsIbuki Nakamura, Hisato Fujisaka, and Masaru Fukushima2019

    • Author(s)
      Ibuki Nakamura, Hisato Fujisaka, and Masaru Fukushima
    • Organizer
      International Symposium on Nonlinear Theory and Its Applications
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Representation of Quantum Waves and Particles in Hybrid Continuous-Discrete Momentum Fields2019

    • Author(s)
      Shota Hayakawa, Nobuyuki Hirami, Ibuki Nakamura, and Hisato Fujisaka
    • Organizer
      International Symposium on Nonlinear Theory and Its Applications
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Consideration of Quasi-Periodic Behavior of anElectron in Quantum Double-Well2019

    • Author(s)
      Ibuki Nakamura and Hisato Fujisaka
    • Organizer
      IEEE Workshop on Nonlinear Circuit Networks
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research

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Published: 2019-04-18   Modified: 2024-01-30  

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