室温オプトメカニカルカビリティからの量子相関
T P Purdy1, K E Grutter2, K Srinivasan2
1Joint Quantum Institute, National Institute of Standards and Technology, Gaithersburg, MD 20899, USA. thomas.purdy@nist.gov.
まとめ
量子測定バックアクション,物体の測定によって引き起こされる干渉
科学分野:
- 量子力学について
- ナノ物理学
- 光学について
背景:
- 位置測定は本質的にオブジェクトの動き (量子測定バックアクション) を妨害します.
- この効果は通常,マクロスコープのオブジェクトの熱運動によってマスクされます.
- 部屋の温度で量子バックアクションを観察するのは 難しいことです
研究 の 目的:
- 量子測定バックアクションを室温でナモメカニカルシステムで観測し測定する.
- 量子バックアクションと熱運動を区別する方法を開発する.
- 量子校正温度計の可能性を 探るためだ
主な方法:
- ナノメカニカルビームとレーザーを使って 振動を測定した
- 量子バックアクションを誘導するために 光学力の変動を導入した
- 量子効果を分離するために 交差相関の技術を使いました
- ハイゼンベルグの測定-混乱の不確実性関係を活用した.
主要な成果:
- 量子測定のサインを 室温まで観察しました
- 光学的に誘導された運動と熱的運動を区別する方法を実証した.
- 熱運動の大きさを測定するための量子相関の使用を展示しました.
結論:
- 量子測定のバックアクションは,室温でも観測し測定することができます.
- この研究は,量子原理を用いた絶対温度計の新しいアプローチを提供します.
- この研究はナノスケールでの量子力学と熱力学を結びつけています
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