2つの量子ビットの最大限絡み合った安定状態の分散的生成
Y Lin1, J P Gaebler1, F Reiter2
11] National Institute of Standards and Technology, 325 Broadway, Boulder, Colorado 80305, USA [2].
Nature
|November 26, 2013
まとめ
研究者は,ユニタリープロセスをエンジニアリングされた消散と組み合わせて,トラップされたイオンクビットを使用して,安定した絡み合ったベル状態を作成しました. この新しい方法は,騒音に対する絡み合いを安定させ,堅牢な量子技術への道を開く.
科学分野:
- 量子物理学とは,量子物理学のことです.
- 量子情報科学とは,量子情報科学である.
背景:
- 絡み合った状態は,量子物理学,暗号学,計算において極めて重要です.
- 決定的エンタグメントの作成は,通常,高精度ユニタリープロセス (量子ゲート) に依存します.
- 単一プロセスは,環境の相互作用と制御の不完全性による脱コエレンスに敏感です.
研究 の 目的:
- 2つのトラップされたイオン量子ビットの近似ベル状態を決定的に生成し,安定させる.
- 統合操作と,エンタグレメント生成のためのエンジニアリングによる分散を組み合わせた新しいアプローチを探求する.
主な方法:
- 光学ポンプに類似した,トラップイオンクビットを使用して,連続した,時間に関係のないプロセスを実装しました.
- エンジニアリングによる分散を伴う統合的プロセスにより,システムを安定した,絡み合った安定状態に導く.
- 初期量子ビット状態から独立して,実験ノイズに耐性のあるエンタグレメント安定化が実証されています.
主要な成果:
- 2つのトラップイオン量子ビットの近似ベル状態を成功裏に生成し,安定させました.
- 連続した,時間に関係のない方法で絡み合いの安定化を示した.
- 環境騒音とデコヘレンスに対する絡み合いの強さを達成しました.
結論:
- 単一プロセスと工学的な消去の組み合わせは,絡み合った状態を作り,安定させるための強力な方法を提供します.
- この研究は,消耗的量子工学,量子計算,および消耗的相移行の理解に向けた重要な一歩を表しています.
- 実証された技術は,望ましい量子力学と安定状態を達成するための様々な実験システムに広く適用できます.
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