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Measurements of Soil Carbon by Neutron-Gamma Analysis in Static and Scanning Modes
Published on: August 24, 2017
クープリングされたジョセフソン相量子ビットの同時状態測定
R McDermott1, R W Simmonds, Matthias Steffen
1Department of Physics, University of California, Santa Barbara, CA 93106, USA.
まとめ
研究者らは,カップリングされたジョセフソン相量子ビットの同時シングルショット測定を開発しました. このテクニックは,測定のクロストークを最小限に抑え,量子エンタグメントを明らかにし,高度な量子コンピューティングの道を開く.
科学分野:
- 量子コンピューティング
- 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:
- 拡張可能な量子コンピューティングには,量子ビット (qubits) の効率的な測定が必要です.
- 複数の量子ビットの単発測定は大きな課題です.
- ジョセフソン相量子ビットは,量子計算のための有望なプラットフォームです.
研究 の 目的:
- カップルされたジョセフソン相量子ビットの同時単発測定を実証する.
- 時間領域における量子ビット相互作用を直接探査する.
- 測定のクロストークを調査し,軽減するために.
主な方法:
- 単発の同時測定技術を使用した.
- クープリングされたジョセフソン・フェーズ・クビットを使用した.
- 分析された時間領域の量子ビット相互作用と測定クロストーク.
主要な成果:
- クープリングされた量子ビットで同時に単発測定を成功裏に実行しました.
- 測定クロストークの効果を導入し,定量化しました.
- 精密なタイミング調整により,クロストークの最小化が実証されています.
- 2つの量子ビット状態 (01と10) の間の反相振動が観察されました.
結論:
- カップルされたジョセフソン相量子ビットでは,同時単発測定が可能である.
- 測定のクロストラックは効果的に管理できます.
- 2量子ビット状態の量子力学的絡み合いを観測した.
- この技術は,マルチクビットゲートと量子アルゴリズムの完全な特徴付けを可能にします.
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