半導体マイクロキャビティのポラリトンコンデンサートの集合流体力学
A Amo1, D Sanvitto, F P Laussy
1Departamento Física de Materiales, Universidad Autonóma de Madrid, 28049 Madrid, Spain.
Nature
|January 17, 2009
まとめ
私たちは,ポラリトンと呼ばれるユニークな軽物質系における超流動性を観察しました. これらのコンデンサートは抵抗なしに移動し,障害物に出くわしたときに分裂さえし,バランスのとれないシステムの新しい物理を明らかにしました.
科学分野:
- 量子物理学とは,量子物理学のことです.
- 凝縮物質物理学 凝縮物質物理学
- オプティクスは光学です.
背景:
- 半導体の微小穴は,弱相互作用するボゾンを宿している.
- ポラリトンとは,エキソンとフォトンの混合物であり,相関的または不相関的興奮下で凝縮体を形成します.
- ポラリトン濃縮物は,渦と線形分散によって証明される超流動性について調査されています.
研究 の 目的:
- 一貫したポラリトンコンデンサートのダイナミクスを作成し,研究する.
- マイクロキャビティの欠陥と相互作用するポラリトンの超流動性特性を調査する.
- 均衡状態から外れた消散コンデンサートの振る舞いを調査する.
主な方法:
- 短時間の光学パルスによるコヒーレント刺激を用いて,ポラリトンコンデンサートを形成する.
- ポラリトン濃縮物と微小穴の欠陥との衝突を誘導する.
- 軽物質系の集合的動力学と分散関係を観察する.
主要な成果:
- 超流動性を示す高速で一貫した光物質の波束を示した.
- 観測された無拡散運動,障害物に対する抵抗のない流れ,および抑制されたレイリー散乱.
- 波束の大きさで波束に匹敵する障害物に出くわしたとき,ポラリトン流体の2つに分裂を報告した.
結論:
- この研究は,バランスを崩した消散系における異常な超流動性を明らかにした.
- 線形分散と抵抗のない流れを含む観測された現象は,ポラリトン超流動性の証拠を提供します.
- この研究は,非均衡コンデンサートの物理学の探索のための新しい道を開きます.
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