騒々しい量子プロセスの対称化された特徴づけ
Joseph Emerson1, Marcus Silva, Osama Moussa
1Department of Applied Math, University of Waterloo, Waterloo, ON N2L 3G1, Canada.
Science (New York, N.Y.)
|September 29, 2007
まとめ
我々は,量子非相関性を測定するための対称化技術を開発し,多体量子システムを制御する際の限界を克服しました. この方法は,量子コンピューティングアプリケーションの実験的複雑性を大幅に削減します.
科学分野:
- 量子情報科学とは,量子情報科学である.
- 量子コンピューティング
- 凝縮物質物理学 凝縮物質物理学
背景:
- 多体量子システムの高精度制御は,量子コンピューティングにとって極めて重要です.
- 量子システムは,環境の騒音や制御の不完全性から脱コエレンスに非常に敏感です.
- 現在のノイズ特徴づけの方法は,大型量子システムでは計算的に実行できない.
研究 の 目的:
- 量子システムにおける脱相性特性を実験的に測定するための新しい技術を導入する.
- マルチボディシステムの既存のノイズ特徴付け方法の難解さを克服するために.
- 量子コンピュータのより堅牢な制御と開発を可能にするために.
主な方法:
- デコヘレンスの直接実験的な測定のための対称化ベースの技術.
- 必要な実験の数を減らし,サブシステムの数で指数関数から多項式にスケーリングする.
- 固体システムにおける核スピンの制御の最適化に関するデモ.
主要な成果:
- 主要な脱合性特性の実験的測定が成功しました.
- 既存の方法と比較して,実験上のオーバーヘッドを大幅に削減しました.
- 量子制御における実用的な応用のための技術の検証.
結論:
- シンメトリゼーションテクニックは,デコヘレンスを特徴付けるための効率的でスケーラブルなアプローチを提供します.
- この方法は,量子コンピューティングのための高精度制御の開発を容易にする.
- この技術は,固体量子情報処理に適用できます.
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