2022 Fiscal Year Final Research Report
Representation of coupled quantum dots by nonlinear stochastic ordinary equation and its application to simulation of THz communication system
| Project/Area Number |
19K04394
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Review Section |
Basic Section 21020:Communication and network engineering-related
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| Research Institution | Hiroshima City University |
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Principal Investigator |
Fujisaka Hisato 広島市立大学, 情報科学研究科, 教授 (30305784)
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| 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)
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| Project Period (FY) |
2019-04-01 – 2023-03-31
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| Keywords | 通信システム / 量子力学系 / 数理モデル |
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| 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.
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| Free Research Field |
通信・信号処理システム，量子系のモデリング
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| 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．
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