超伝導電路光学学で実現したトポロジック格子
Amir Youssefi1,2, Shingo Kono1,2, Andrea Bancora1,2
1Laboratory of Photonics and Quantum Measurement (LPQM), Swiss Federal Institute of Technology Lausanne (EPFL), Lausanne, Switzerland.
Nature
|December 21, 2022
まとめ
研究者は,電路光学連鎖とハネコブ格子におけるトポロジカルなマイクロ波モードを実証した. この研究は,ハイブリッド化モードと格子ハミルトニアンの直接測定を可能にし,複雑な量子多体力学への道を開く.
科学分野:
- 量子物理学と工学
- オプトメカニクス
- 凝縮物質物理学
背景:
- カビティ・オプトメカニクスは 放射線圧による機械的運動を制御し 設計されたシステムの量子制御を可能にします
- 以前のスキームは主に単一モードまたは少数のモードシステムを使用し,スケーラビリティと複雑性を制限しました.
- オプトメカニカル・グリッドは 些細なバンド構造を合成することで 新しいダイナミクスとアプリケーションを提供します
研究 の 目的:
- 超伝導マイクロ波光学回路のスケーリング制限を克服するために.
- 一次元と二次元の光学メカニカル格子におけるトポロジカルなマイクロ波モードを実証する.
- 混合モードと格子ハミルトニアンのための新しい測定技術を開発する.
主な方法:
- Su-Schrieffer-Heegerモデルを実現する一次元回路の光学鎖の実装.
- ストレートグラフェンモデルを模倣した二次元光学メカニカル・ハネコム・グリッドの実現.
- ローカルプローブなしでモード機能を直接測定するために埋め込まれた光学相互作用の活用.
主要な成果:
- 1D と 2D オプトメカニカル格子におけるトポロジカルマイクロ波モードの実証.
- ハミルトニアン格子の再構築
- オプトメカニカル格子内の残留障害の直接測定
結論:
- オプトメカニカル・グリッドは 複雑な量子ダイナミクスを探すための 拡張可能なプラットフォームを提供します
- 新しい測定技術により,格子特性と乱れを詳細に特徴付けることができます.
- この研究は,量子多体物理学,トポロジカルプロパティ,および新興非線形ダイナミクスの研究への道を開きます.
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