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光と光学的な原子刺激の間の絡み合い
1School of Physics, Georgia Institute of Technology, Atlanta, Georgia 30332-0430, USA.
Nature
|June 21, 2013
まとめ
研究者は光学格子におけるライドバーグ状態を用いて,光と原子の間の絡み合いを作り出した. このブレークスルーにより,量子論理操作のための多くのノードを持つ,より速く,より信頼性の高い量子ネットワークが可能になります.
科学分野:
- 量子情報科学とは,量子情報科学である.
- 原子物理 原子物理学
- 量子光学とは,量子光学である.
背景:
- 絡み合いの生成と分布は,量子ネットワークの重要な目標である.
- 自発的放射を用いた以前の方法は,概率的で遅いもので,ネットワークを2つのノードに制限しています.
- 原子-光子絡み合いのプロトコルは,光学空洞またはライドバーグ状態によって改善されます.
研究 の 目的:
- ライドバーグ状態における光場と原子の絡み合いの生成を報告する.
- 拡張可能な量子ネットワークの確率的絡み合い生成の限界を克服するために.
主な方法:
- 光学格子に閉じ込められた超冷たい原子ガスを利用する.
- 基本的状態とライドバーグ原子状態の両方に対して,状態無感の閉じ込めを使用します.
- 光学的な原子相連性の脱相を阻害する.
主要な成果:
- ライドバーグ状態で光場と原子の絡み合いを生成しました.
- 原子の相関性を保護する,光学格子の中の状態無感の閉じ込めが実証された.
- 確率的な性質の自発的な放出を克服し,より迅速な絡み合いの生成を実現しました.
結論:
- 開発された方法は,機能的な,多ノード量子ネットワークを可能にします.
- 原子記憶間の決定的量子論理演算の道を開く.
- スケール可能で堅牢な量子通信とコンピューティングインフラストラクチャの開発を進めています.
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