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ボーゼ-アインシュタイン凝縮物に対する強力な原子場結合は,チップ上の光学空洞にある

Yves Colombe¹, Tilo Steinmetz, Guilhem Dubois

¹Laboratoire Kastler Brossel, ENS/UPMC-Paris 6/CNRS, 24 rue Lhomond, 75005 Paris, France.

|November 13, 2007

まとめ

研究者は,繊維ベースの空洞と原子チップ技術を使用して,ボース・アインシュタイン凝縮体 (BEC) と光学空洞の強い結合を達成しました. この突破は,量子情報アプリケーションの原子-光子相互作用の正確な制御を可能にします.

科学分野:

量子光学とは,量子光学である.
原子物理学原子物理学
洞穴量子力学量子電動力学

背景:

穴の量子電動力学の強いカップリング体制は,原子-光子相互作用を強化します.
単一の原子で強い結合を達成することは確立されていますが,ボース・アインシュタイン凝縮体 (BEC) のような多原子系にこれを拡張することは困難でした.
以前の実験では,BECと光学空洞を組み合わせたが,個々の原子の強い結合体制ではなかった.

研究の目的:

実験的に,BECと光学空洞の間の強い結合を実現する.
光学空洞内のBECの決定的な位置づけと制御を可能にするシステムを開発する.
強く結合されたBEC-キャビティシステムの動作と性質を調査する.

主な方法:

原子チップ技術と組み合わせた光ファイバーベースの光学腔を使用しました.
穴内のBECの実装された決定的位置付けは,単一のアンチノードに局所されています.
穴の伝送測定とスペクトルマッピングを通じてシステムの反応を研究した.

主要な成果:

穴モード内の多くの原子に対して同一の強い結合を達成した.
BECの位置によって制御され,調節可能なコップリング速度が実証されています.
観測された真空ラビ分裂は20GHzを超え,さらに原子の超精細構造に起因する分裂が発生した.
穴の伝送測定では,強く結合されたBECで測定可能な加熱は見つかりませんでした.

結論:

開発されたシステムは,強結合体制で光学腔を持つBECを成功裏に統合しています.
このプラットフォームは,BECsの光物質相互作用の正確な制御を提供します.
このシステムは,量子情報処理のための強固な光物質量子インターフェイスとして有望である.

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