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Gradient Echo Quantum Memory in Warm Atomic Vapor
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遠隔の原子集合に保存された刺激のための測定誘発の絡み合い
C W Chou1, H de Riedmatten, D Felinto
1Norman Bridge Laboratory of Physics 12-33, California Institute of Technology, Pasadena, California 91125, USA.
Nature
|December 13, 2005
まとめ
研究者は,量子ネットワークの重要なステップである2つの分離された原子組の間の絡み合いを実証しました. この進歩は,量子情報科学のために,絡み合った量子状態の分布と保存を可能にします.
科学分野:
- 量子情報科学とは,量子情報科学である.
- 量子ネットワークは量子ネットワークです.
- 原子物理 原子物理学
背景:
- 複雑な量子ネットワーク上で量子資源を拡散することは,量子情報科学のアプリケーションにとって極めて重要です.
- 絡み合った量子状態と量子記憶は,スケーラブルな量子計算,通信,計測学にとって不可欠です.
研究 の 目的:
- 2つの異なる,空間的に分離された原子集合の間の絡み合いを示すために.
- 絡み合った量子状態を遠隔で配布し,保存する方法を確立する.
主な方法:
- 原子サンプルから放出される光子の量子干渉によって絡み合いを誘導する.
- 絡み合った状態を,プログラム可能な遅延で,大きな原子組 (10^5の原子) で保存する.
- 原子状態を光学場にマッピングし,相連性と光子統計を測定することによって,絡み合いを確認します.
主要な成果:
- 2つの空間的に分離された原子組の間の絡み合いを生成しました.
- 共同原子状態の絡み合いの下限を定量的に決定した.
- 原子組で絡み合った量子状態のリモートストレージを実証した.
結論:
- この研究は,絡み合った量子状態の分布と保存における重要な進歩を表しています.
- この発見は,よりスケーラブルな量子ネットワークアーキテクチャへの道を開く.
- 量子計算,通信,計測学の将来の進歩を可能にします.
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