相互作用しないボース・アインシュタイン凝縮物のアンダーソン局所化
Giacomo Roati1, Chiara D'Errico, Leonardo Fallani
1LENS and Dipartimento di Fisica, Università di Firenze, 50019 Sesto Fiorentino, Italy.
Nature
|June 13, 2008
まとめ
科学者は,準周期的な格子の中の超冷たい原子を使用して,物質波のためのアンダーソンの局所化を観察しました. これは,制御可能なシステムにおける波の局所化を実証し,量子現象の研究のための扉を開く.
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
- 波現象は波の現象である.
背景:
- アンダーソンの局所化は,電子輸送のために予測されている,光の波のような様々なシステムで観察される一般的な波現象です.
- 物質波のためのアンダーソンの局所化の直接観測は,挑戦的でした.
- 超冷たい原子は,乱れによって引き起こされる局所化を研究するための高度に制御可能なプラットフォームを提供します.
研究 の 目的:
- 物質波のアンダーソンの局所化を実験的に実証する.
- 準周期格子における拡張状態と局所状態の交差を調査する.
- 原子トンネリングエネルギーとの関係で臨界の乱れ強さを特徴づけるために.
主な方法:
- 相互作用しないボース・アインシュタイン凝縮液を用いたものです.
- 一次元の準周期的な光学格子を使用しています.
- 輸送特性,空間分布,運動分布を分析する.
主要な成果:
- 物質波に対するアンダーソンの局所化の明確な実験的実証.
- クロスオーバー体制の特徴,拡張状態から局所化された状態への移行を示しています.
- 重要な障害の強さがトンネル掘りエネルギーに比例することを決定する.
結論:
- 準周期格子内の超冷たい原子は,物質波のアンダーソン局所化観測のための実行可能なシステムを提供します.
- このシステムの制御可能な性質は,乱れによって引き起こされる現象の研究を容易にする.
- このプラットフォームは,乱れと相互作用の相互作用,そしてエキゾチックな量子相の相互作用を探索するために使用することができます.
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