連続変換対称性を破る量子ガスの超固体形成
Julian Léonard1, Andrea Morales1, Philip Zupancic1
1Institute for Quantum Electronics, ETH Zurich, 8093 Zurich, Switzerland.
Nature
|March 3, 2017
まとめ
量子ガスの超固体状態を作り 連続変換対称性を破ったのです この突破は 複雑な量子現象と ガラスのようなシステムの 研究への道を開きます
科学分野:
- 量子多体物理学
- 凝縮物質物理学
- 原子物理学
背景:
- 超固体は超流動性を結晶の秩序と組み合わせており 連続的な対称性が欠けています
- 超固体の実験的検証は 何十年もの間 困難でした
- 過去の格子型超固体は 継続的な基底状態の変性を持っていなかった.
研究 の 目的:
- 超固体状態を実験的に実現する.
- この新しい超固体状態の性質を調査するために
- ガラスの多体系を研究する プラットフォームを提供するためです
主な方法:
- ボーゼ-アインシュタインコンデンサを 2つの光学腔に結合した
- 空間対称性を破るため,コンデンサを空洞モードに対称的に結合した.
- 水晶の位置をリークした空洞の光で測定し,相相合性と退化性を確立する.
主要な成果:
- 一方向に連続した変換対称性を破る超固体を成功裏に実現した.
- 超固体の定着した相相合性.
- 提案された超固体状態の重要な特徴である高基底状態の退化が観察されました.
結論:
- この研究は,連続的な変換対称性破裂を持つ超固体の最初の実験的実現を示している.
- 開発された方法は,超固体状態の作成と研究のための新しい経路を提供します.
- このシステムは 調節可能な変性を持つガラスのような量子物質を 探求するためのプラットフォームを提供します
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