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Controlling the parity and time-reversal symmetry of graphene Dirac plasmons and its application to terahertz lasers

控制石墨烯狄拉克等离子体激元的奇偶性和时间反演对称性及其在太赫兹激光器中的应用

基本信息

批准号：
21H04546
负责人：
尾辻泰一
金额：
$ 26.96万
依托单位：
Tohoku University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (A)
财政年份：
2021
资助国家：
日本
起止时间：
2021-04-05 至 2026-03-31
项目状态：
未结题

项目摘要

１. GDPメタ表面のPT 対称性のモデル化（担当：分担者楢原，佐藤，Ryzhii，代表者尾辻）・ADGG構造内のGDPメタ表面を電気格子とみなし，GDP波長に比して十分に短い空間セル分解能でGDP伝搬モード毎に損失・利得特性を等価回路化した散乱行列の多次元化を進めた．代表的なADGG構造・物性パラメータにおいてモード間結合を伴う正常応答を確認した．今後、構築した多次元散乱行列による数値解析法の種々のADGG構造・物性パラメータに対する汎用性を検証してゆく．更に、上記伝送線路モデルと既開発の電磁界解析ツールを用いてADGG-GDP共振特性（モード周波数，Q値）とPT対称性との相関の解明を進めた，PT対称となる特異点は利得と損失が拮抗する動作点で発現することを確認できた。今後、ADGGの構造・物性パラメータに対する高速利得変調特性の相関と性能限界に対する見通しを得る．２. ADGG-GFET内GDPの不安定状態におけるミクロスコピックなPT 対称性の解明と，超高速利得変調動作の原理検証（担当：代表者尾辻，分担者吹留，佐藤；研究協力：松田（東大））・デバイス試作プロセスは，東北大学電気通信研究所附属ナノ・スピン実験施設設備を利用して実施した．（担当：分担者佐藤，吹留，代表者尾辻）・電圧印加状態での非平衡GDPダイナミクスをナノ空間分解能と100フェムト秒の時間分解能で直接観測可能な研究分担者：吹留，松田らが開発したオペランド時間・空間分解X線光電子分光装置を用いて観測する実験を進めた．（担当：分担者吹留；　研究協力：松田（東大））更に、超高速利得変調動作実験の準備を進めたが、2022.３.１６に発生した宮城県沖地震により研究代表者所有のTHz時間領域分光装置が損壊し中断した．政府補償による代替装置購入の目途が立ち、2023年度には実験再開できる見込みである．

1. GDP メタsurfaceのPT 対モデル化 (Responsible person: Sharer: Narahara, Sato, Ryzhii, representative Otsuji)・The GDP surface within the ADGG structure is an electric lattice, and the GDP wavelength is very short of the space. The decomposition of GDP can be done by moving the characteristics of losses and gains into equal-weighted loops and multi-dimensionalization of scattered ranks. The representative structure and physical properties of ADGG are the combination of the structure and the physical properties of the ADGG. From now on, we will build the ADGG structure and physical properties of the multi-dimensional scattered array and the numerical value analysis method and the general-purpose proof of it. Update, the above-mentioned transmission line is used to analyze the electromagnetic field of the electromagnetic field and use ADGG-GDP resonance characteristics (cycle number, Q value). The T対symmetry is related to the interpretation and advancement, and the PT対symmetry is the singularity point, the gain, the loss, the antagonistic action point, and the action point is confirmed. From now on, ADGG's structure and physical properties will be related to the high-speed adjustment characteristics and performance limits of ADGG. 2. Explanation of the unstable state of GDP in ADGG-GFET and proof of the principle of ultra-high-speed profit adjustment operation (responsible person: Representative Otsuri, sharer) Fukidome, Sato; research collaboration: Matsuda (Tohoku University), Tohoku Experimental Equipment Co., Ltd., Tohoku University Electrical and Communications Research Institute Affiliated Tohoku University Electronics and Communication Research Institute, Tohoku University Electronics and Communication Research Institute Affiliated Research Institute, Tohoku University. (Responsibility: Sharers Sato, Fukidome, Representative Otsuji)・It is possible to directly measure the non-equilibrium GDP of the electric pressure Inca state, the space decomposition energy of 100 seconds, and the time decomposition energy of 100 secondsなResearch coordinator: Fukidome, Matsuda Kazuo Kaishi, Time and Space Decomposition (Responsibility: sharer Fukidome; Research collaboration: Matsuda (Todai)) update, super-high-speed profit adjustment operation 実験のpreparationを入めたが, 2022.３ .16 The THz time domain spectroscopic device owned by the Miyagi Prefecture Earthquake Research Representative was damaged and interrupted. The government compensates for the purchase of replacement equipment and the project will be re-opened in 2023.