絡み合った機械的共振器の量子状態の準備とトモグラフィー
E Alex Wollack1,2, Agnetta Y Cleland1,2, Rachel G Gruenke1,2
1Department of Applied Physics, Stanford University, Stanford, CA, USA.
Nature
|April 21, 2022
まとめ
科学者は超伝導量子ビットを用いて 量子状態を制御しました この画期的な発見により 量子音響プロセッサーの 誤差修正や高度な量子技術の 開発が可能になりました
科学分野:
- 量子力学について
- 固体物理学
- 量子コンピューティング
背景:
- 機械的な振動器は 現代の技術にとって不可欠です
- 機械装置と量子回路を 接続することで 量子音響プロセッサができます
- 現在のプラットフォームは,複数の機械的振動器の制御とエラー訂正のための急速な読み取りが欠けている.
研究 の 目的:
- 超伝導量子ビットを用いた量子音響プロセッサを開発し,ナモメカニカル共振器を制御する.
- 機械的な状態の決定的操作と急速な量子非破壊測定を実証する.
- 音響システムの量子エラー修正能力を向上させるため
主な方法:
- 超伝導量子ビットを用い 超伝導量子ビットを用い 超伝導量子ビットを用い
- 状態操作のための速い量子ビットの交換操作を実行した.
- フォノン番号の決定のために強い分散体制でラムゼイ測定を使用した.
- 量子トモグラフィーを 非古典的状態と 絡み合っている状態で実施した.
主要な成果:
- 超伝導量子ビットを使って 2つのナモメカニカル共振器の量子状態を 制御し読み出した.
- 機械的状態の決定的操作を迅速なスワップ操作で証明した.
- フォノン数分布の正確な決定を達成した.
- 非古典的および絡み合った機械的状態の量子トモグラフィーを提示しました.
結論:
- 開発されたデバイスは,量子音響プロセッサのフィードバックベースの動作に向けた重要なステップです.
- この研究により 機械システムにおける 量子制御と誤差修正の 基礎が確立されました
- この発見は,強力な量子音響プロセッサの実現に寄与する.
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