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超伝導量子ビットの決定的エンタグリングは,パリティ測定とフィードバックによるものです
D Ristè1, M Dukalski, C A Watson
1Kavli Institute of Nanoscience, Delft University of Technology, PO Box 5046, 2600 GA Delft, The Netherlands.
Nature
|October 18, 2013
まとめ
研究者らは,超伝導クビットのための新しいパリティメーターを実証し,測定を通じてエンタグレメント生成を可能にしました. この突破は,固体系における決定的量子誤差補正の道を開く.
科学分野:
- 量子力学は,量子力学という
- 量子情報科学とは,量子情報科学である.
- 固体物理 固体物理学
背景:
- 量子測定は通常,重置と絡み合いを破壊する.
- 測定,特にパリティ測定を介してエンタグリングを生成することは,量子コンピューティングにとって非常に重要です.
- 既存の対数メーターの提案は,偶数と奇数の両方の対数結果の絡み合いを作り出すという課題に直面しています.
研究 の 目的:
- 偶数と奇数の両方の測定でエンタグレメントを生成できるパリティメーターを実現するには,超伝導クビットが生成されます.
- パリティ測定を用いたエンタグラーメント生成のための決定的方法を開発する.
- 固体量子システムにおけるアクティブ量子エラー補正のための重要なコンポーネントを提供する.
主な方法:
- 2つの超伝導量子ビットの時間解像度,連続パリティ測定.
- 3次元回路の量子電動学アーキテクチャを利用する.
- 段階感知パラメータ増幅とポストセレクションを使用します.
- パリティメーターをフィードバック制御ループに統合する.
主要な成果:
- パリティ測定による88%のフィデリティエンタグメント生成を達成しました (後任).
- フィードバック制御を使用した66%の忠誠度で実証された決定的エンタグレメント生成.
- 偶数と奇数の両方の偶数結果の絡み合いを生成するパリティメーターを成功裏に作成しました.
結論:
- 開発されたパリティメーターとフィードバックプロトコルは,量子コンピューティングの重要な進歩です.
- これらの方法は,固体プラットフォームにおける決定的量子誤差補正への道を提供します.
- この研究は,強固な量子情報処理を実現するための重要な課題に取り組んでいます.
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