量子基底状態と,機械的共振器の単音声制御について
A D O'Connell1, M Hofheinz, M Ansmann
1Department of Physics, University of California, Santa Barbara, California 93106, USA.
Nature
|March 19, 2010
まとめ
研究者らは,量子ビットを使って機械ドラムを量子基礎状態まで冷却した. 彼らはまた,単一の量子刺激を生み出し,機械システムの完全な量子制御に向けた最初のステップをマークしました.
科学分野:
- 量子力学は,量子力学という
- マクロスコープの機械システム
- 量子制御とは,量子制御のことです.
背景:
- 量子力学は,多くの物理システムを正確に記述します.
- 量子力学をマクロスコーピックシステムで実証することは,量子基礎状態に到達する難しさのために困難です.
- 標準的な冷凍法では,必要な低温を達成するには不十分です.
研究 の 目的:
- 量子力学をマクロスコープの機械システムで実証する.
- 機械的なモードをその量子基本状態に冷却するために.
- 機械システムに対する量子制御を達成するために.
主な方法:
- 従来の低温冷却方式を利用した.
- マイクロ波周波数メカニカルオシレータ ("量子ドラム") を使った.
- 機械的振動器を量子ビットと結合して状態を測定する.
主要な成果:
- 機械的なモードを量子基本状態に冷却することに成功した.
- 共振器の状態の量子限定測定を実証した.
- 共振器内の単一の量子刺激 (フォノン) の制御可能な生成を達成しました.
結論:
- この研究は,マクロスコープの機械システムを量子基礎状態まで冷却することに成功した.
- この研究は,機械システムの完全な量子制御に向けた重要な一歩を表しています.
- 量子ビットと結合した"量子ドラム"は,マクロスコープのオブジェクトの量子力学研究のための実行可能なプラットフォームを提供します.
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