量子光学. 量子光学について. N個の光子を含むことができない電磁モードの量子力学

L Bretheau¹, P Campagne-Ibarcq¹, E Flurin¹

¹Laboratoire Pierre Aigrain, Ecole Normale Supérieure-PSL Research University, CNRS, Université Pierre et Marie Curie-Sorbonne Universités, Université Paris Diderot-Sorbonne Paris Cité, 24 Rue Lhomond, 75231 Paris Cedex 05, France.

Science (New York, N.Y.)

|May 16, 2015

まとめ

研究者は,光子数を制限することによって,量子システムにおける電磁気モードを制御した. この方法は,シュロディンガーの猫の状態のような量子状態を作り出し,量子情報と計測学に有用です.

科学分野:

量子物理学とは,量子物理学のことです.
量子光学とは,量子光学である.
量子情報科学とは,量子情報科学である.

背景:

電磁モードは,量子マシンの構築における基本的な構成要素である.
これらのモードの正確な制御は,量子技術の進歩に不可欠です.

研究の目的:

電子磁気モードの相空間を制御することによって,電磁気モードを操作するための新しい方法を導入する.
量子場のダイナミクスを特定のエネルギーレベル (0からN-1の光子) の範囲に限定する.

主な方法:

単一のエネルギーレベル (N光子) へのアクセスを防止する技術を実装する.
システムに共振ドライブを適用する.
量子場の状態を分析するために,直接のウィーナー断層撮影を行う.

主要な成果:

フィールドのダイナミクスは0からN-1のエネルギーレベルに成功裏に制限されました.
レベル占有が時間的に振動することを観察し,共鳴駆動下でのNレベルシステムを模倣しました.
ダイレクト・ウィガーン・トモグラフィーでは,進化期半ばにシュロディンガーの猫のような状態を含む非古典的な特徴が明らかになった.

結論:

開発された方法は,その相空間内の量子場動態の微細な制御を提供します.
この制御は,量子情報処理と精度計測学の重要な応用への道を開く可能性があります.

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