強く相互作用する光子間の対称性保護衝突
Jeff D Thompson1,2, Travis L Nicholson3, Qi-Yu Liang3
1Department of Physics, Harvard University, Cambridge, Massachusetts 02138, USA.
Nature
|January 25, 2017
まとめ
研究者は超冷たい原子ガスで制御された光子対光子相互作用を達成し,量子技術にとって不可欠な強固な相変化を示しました. この突破により シングルフォトンスイッチや 量子論理ゲートの進歩が可能になりました
科学分野:
- 量子物理学
- 原子物理学
- 光学について
背景:
- 強力に相互作用するシステムにおける 堅固な量子現象の実現は 現代の物理学の重要な課題です
- 凝縮された物質のシステムや 閉じ込められた原子や 量子応用のための光子などの 様々なプラットフォームを 探しています
- フォトン対フォトンの相互作用は通常は無視されるが,特定のシステムで設計されている.
研究 の 目的:
- 制御された2つの光子の衝突を証明する
- フォトン対フォトンの相互作用に伴う 重要な相変化を実現する.
- これらのエンジニアリングされた相互作用の 頑丈さと根本的なメカニズムを探求する
主な方法:
- 超冷たい原子ガスの光とライドバーグ刺激の間のコヒーレントカップリングを使用します.
- 個々の光子間の強い相互作用を設計する.
- フォトン対フォトンの衝突による相変化を測定する.
主要な成果:
- 制御された2つの光子の衝突を証明した.
- 正確な実験パラメータから独立して,強固な π/2 段階移転 (0.48(3) を観測した.
- この効果は最小限の光子の吸収で 高精度を示しています
結論:
- 量子制御のための強力なメカニズムを提供します.
- この研究は,単光子スイッチと全光学量子論理ゲートの開発への道を開きます.
- 強く相互作用する光子を含む新しい量子多体現象の探索を可能にします.
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