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絡み合った機械的振動器
J D Jost1, J P Home, J M Amini
1Time and Frequency Division, National Institute of Standards and Technology, Boulder, Colorado 80305, USA. john.d.jost@gmail.com
Nature
|June 5, 2009
まとめ
科学者は,機械的振動器,特に原子イオンの振動状態における量子絡み合いを実証している. この画期的な発見は,量子現象を古典的世界へと拡張し,より大規模な量子システムと非局所性をテストするための扉を開く.
科学分野:
- 量子力学は,量子力学という
- 原子物理 原子物理学
- 量子情報科学とは,量子情報科学である.
背景:
- 量子力学は,重置と絡み合いによって特徴づけられ,理論的にはシュレディンガーの猫のようなマクロスコーピック系にまで及ぶ.
- 顕微鏡の絡み合いは観察されていませんが,これはおそらく環境の不協和性または大型システムにおける絡み合いを制限する未発見のメカニズムによるものです.
- 以前の絡み合いのデモでは,光子,原子,凝縮物質装置が使われたが,明確な機械的振動器は使わなかった.
研究 の 目的:
- 分離された機械的振動器の間の決定的量子絡みを示すために.
- 原子イオンの内部状態を遠隔の機械的振動器で絡ませる.
- 古典的な世界において一般的であった自由度で量子絡み合いを探求すること.
主な方法:
- 特定の場所に閉じ込められた原子イオンを機械的な振動器として利用する.
- 制御された相互作用を実装して,イオンペアの振動状態を決定的に絡める.
- 原子イオンの内部状態と機械的振動器の間の絡み合い操作を実行する.
主要な成果:
- 分離された機械的振動器 (原子イオンの振動状態) の間の決定的絡み合い (deterministic entanglement) の実証に成功した.
- 原子イオンの内部状態と遠くにある機械的振動器の間の絡み合いを達成した.
- 古典的な領域に共通する自由度で量子絡まりを確立した.
結論:
- 量子エンタグリングは,量子力学と古典力学を橋渡しする,異なる機械的振動器で達成できます.
- これらの発見は,より大きなスケールの機械システムの絡み合いと量子非局所性をテストするための道を切り開きます.
- 開発された制御技術は,閉じ込められたイオンによる量子情報処理の進歩に不可欠です.
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