機械的振動器からの単一の光子とフォノン間の非古典的相関
Ralf Riedinger1, Sungkun Hong1, Richard A Norte2
1Vienna Center for Quantum Science and Technology (VCQ), Faculty of Physics, University of Vienna, A-1090 Vienna, Austria.
Nature
|January 19, 2016
まとめ
研究者はナモメカニカル共鳴器を使って単一の光子とフォノン間の量子相関を達成しました. これは固体共振器が 量子ネットワークと通信のための 活力のある光物質量子インターフェースであることを示しています
科学分野:
- 量子情報科学
- 量子光学
- 固体物理学
背景:
- 単一の光子と量子システムのインタフェースは 量子情報科学にとって不可欠です
- 光と物質のインターフェースは 量子物理学のテストや 量子ネットワークに不可欠です
- 物質の量子状態は フォトンの数値を用いて操作し 分配することができます
研究 の 目的:
- 単一の光子とフォノンとの非古典的な相関を証明する.
- 光-物質量子インターフェイスとしてナモメカニカル共振器を使用します.
- チップ上の固体量子アプリケーションを可能にします
主な方法:
- 量子基底状態のナモメカニカル共振器の初期化
- 相関フォトン-フォノンペアの生成と読み取り
- コシ・シュワルツ不等式による量子相関の実験的検証.
主要な成果:
- 単一の光子とフォノン間の非古典的相関が観察された.
- カウシ・シュワルツ不等式の違反を証明し,非古典的な力学的状態を確認した.
- オンチップの固体力学共振器を 機能的な光物質量子インターフェースとして確立した.
結論:
- ナノメカニカル共振器は 効果的な光物質量子インターフェースとして機能します
- 達成された性能は,マクロスコープの量子現象の研究をサポートします.
- 量子通信,量子メモリ,量子トランスデューサの 応用が可能になる.
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