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駆動されたボース・アインシュタイン凝縮物からの物質波ジェットの集合的放射
Logan W Clark1, Anita Gaj1, Lei Feng1
1James Franck Institute, Enrico Fermi Institute and Department of Physics, University of Chicago, Chicago, Illinois 60637, USA.
Nature
|November 7, 2017
まとめ
研究 者 たち は,超 寒い 原子 ガス から 生じる"花火"を 観測 し まし た. ボーゼ-アインシュタイン凝縮物における刺激された衝突は 物質波のジェットを作り出し この量子多体系における量子変動を明らかにしました
科学分野:
- 量子物理学
- 原子物理学
- 凝縮物質物理学
背景:
- 散布実験は物理における物質の相互作用を 探求するものです
- 超冷たい原子ガスは 量子多体システムの制御研究を可能にします
- 前回のボース-アインシュタイン凝縮体実験では 干渉と相関が示されましたが 超放射性類似のシステムは示されませんでした
研究 の 目的:
- ボーゼ-アインシュタイン凝縮物における刺激衝突を調査する.
- 超放射能に類似する 難解な仕組みを探る
- マクロスコーピカルな集団との高度に相関する状態の生成を理解する.
主な方法:
- 周期的に調節された相互作用強度を持つボース-アインシュタイン凝縮物を利用した.
- 実験的に誘発され,観測された駆け抜けた刺激衝突.
- 物質波の放射構造と原子の位置を分析した.
主要な成果:
- 値変調幅を超えた,花火のような物質波の集合的放射を観測した.
- 原子の人口の指数関数的な増加にもかかわらず, ジェットにおける相関関係が不変であることが判明しました.
- ジェット構造と原子の位置が 量子変動から生じたことを証明した
結論:
- ボーゼ・アインシュタイン凝縮物における脱走刺激衝突の条件を確立した.
- ジェット観測を通して 物質波放射の量子性質を明らかにした
- マクロスコープの量子現象の発生における量子変動の役割を強調した.
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