固体量子ビットの核スピン環境のレーザー冷却とリアルタイム測定
1Department of Physics, Harvard University, Cambridge, Massachusetts 02138, USA.
Nature
|October 28, 2011
まとめ
研究者らは,固体系の量子力学の光学制御を実証した. このテクニックは,一貫した光学方法を使用して,ダイヤモンドの個々の窒素空白センターを操作し,高度なアプリケーションのための量子状態制御と測定を可能にします.
科学分野:
- 量子科学と工学は量子科学と工学である.
- 固体物理 固体物理学
- 量子光学とは,量子光学である.
背景:
- オープンシステムにおける量子ダイナミクスの制御は,重要な課題です.
- 一貫した光学技術は,原子とイオン量子状態の操作に不可欠です.
- これらの方法は,レーザー冷却,状態の準備,および計測学の量子測定に不可欠です.
研究 の 目的:
- 固体不純物質の制御とモニタリングに一貫した光学技術を適用する.
- ダイヤモンドの個々の窒素空白 (NV) センターの量子ダイナミクスを調査するために.
- 量子情報処理とナノマグネトメトリーにおける潜在的な応用を探求する.
主な方法:
- ダイヤモンドの個々のNVセンターの電子回転の全光学操作を使用しています.
- 一貫した集団トラッピングとダーク共鳴技術を使用します.
- 核スピン環境のリアルタイム測定と条件付き準備を,ポストセレクションを通じて実施する.
主要な成果:
- 個々のNVセンターの光学冷却を実証した.
- NVセンターの量子状態のリアルタイム測定を達成しました.
- 核スピン環境の条件準備を成功裏に実行しました.
- 原子制御技術の固体システムへの適用性を示しました.
結論:
- 一貫した光学技術は,固体内の個々の原子のような不純物を効果的に監視および制御することができます.
- これらの方法は,全光学ナノマグネトメトリと固体量子ビットの量子フィードバック制御の道を開く.
- この研究は,固体欠陥を用いた量子情報保存と処理の新たな道を開く.
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