サブサイクル量子電動力学

C Riek¹, P Sulzer¹, M Seeger¹

¹Department of Physics and Center for Applied Photonics, University of Konstanz, D-78457 Konstanz, Germany.

Nature

|January 20, 2017

まとめ

研究者は真空レベルの下にある量子変動を観察して中赤外線の圧縮された真空ノイズを生成しました光を研究することで,新しい量子技術と精度測定が可能になります.

科学分野:

量子光学
量子情報科学

背景:

圧縮状態は真空レベル以下で量子変動を示し,量子情報と計測学にとって不可欠です.
現在の分析方法 (ホモダイニング,光子相関) は特定のスペクトル範囲に限定され,光子の吸収/増幅を必要とする.

研究の目的:

時間の領域で中赤外線の圧縮された真空のノイズを生成し,特徴づけます.
吸収や増幅なしに量子変動を研究するための新しい方法を開発する.

主な方法:

中赤外線でタイムロックされた圧縮真空のノイズを生成する.
フェムト秒レーザーパルスによる電気光学サンプリングを用いた時間領域分析.
騒音幅を真空レベルと直接比較する.

主要な成果:

観測されたサブサイクル間隔は,真空場の振幅を大幅に下回る.
隣接する間隔で波動が強くなって量子放射線の相関を示している
フィールド吸収/増幅なしで適用可能な非線形,オフ共振アプローチを開発しました.

結論:

この研究により,中赤外線の量子波動を直接時間領域で研究することが可能になりました
この新しい方法は,量子計測学と特定のエネルギー範囲での光物質の相互作用の研究の道を開きます.
基本的量子力学の研究を容易にする.真空と熱の背景条件に近い.

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