原子のような鏡を持つ空洞量子力学

Mohammad Mirhosseini^1,2,3, Eunjong Kim^1,2,3, Xueyue Zhang^1,2,3

¹Kavli Nanoscience Institute, California Institute of Technology, Pasadena, CA, USA.

Nature

|May 17, 2019

まとめ

研究者は人工的な原子と集合的量子状態の強い結合を達成しましたこの突破は,先進量子技術のためのマルチフォトンのダーク状態の効率的な合成を可能にします.

科学分野:

量子光学
固体量子システム
量子情報科学

背景:

原子の放射は,電磁環境と集合的原子相互作用によって影響を受けます.
強化された自発的放射 (超放射性) は,しばしば開いたシステムにおける非分散的ダイナミクスを覆う.

研究の目的:

単一の人工原子と絡み合った集団状態の間の動的刺激の交換を観察する.
量子エミッターと放射線環境との強い結合を示すシステムを設計する.

主な方法:

超伝導量子ビットを人工原子として用いて一次元の波導体の中に精密に配置する
放射能を捕まえる暗黒の集団状態を作り出し原子空洞系を形成します
強い結合を示す高い相互作用と分散の比率 (協力性 > 100) を示す.

主要な成果:

単一の量子ビットと絡み合った集合量子ビット状態の間の動的興奮交換を観察した.
オープンな波導体の中の鏡のように働く人工的な原子を持つ原子腔系を確立した.
一貫した相互作用が分散を支配する強力な結合体制を達成した.

結論:

オープン波導体内の相互作用する量子ビットの強いカップリングは達成可能である.
このシステムはマルチフォトンのダーク状態を効率的に合成します
量子エミッター配列の相関分散と脱コエレンスのないサブスペースを複数体レベルで利用するための経路を開きます.

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