量子情報について. 鉄磁気マグノンと超伝導量子ビットとのコヒーレント結合
Yutaka Tabuchi1, Seiichiro Ishino2, Atsushi Noguchi2
1Research Center for Advanced Science and Technology (RCAST), The University of Tokyo, Meguro-ku, Tokyo 153-8904, Japan. tabuchi@qc.rcast.u-tokyo.ac.jp.
Science (New York, N.Y.)
|July 11, 2015
まとめ
研究者は単一のマグノンと超伝導量子ビットとの強い結合を達成しました. この量子制御方法は,マイクロ波の穴を利用して,量子情報処理のためのマグノン刺激を強化します.
科学分野:
- 凝縮物質物理学 凝縮物質物理学
- 量子情報科学とは,量子情報科学である.
背景:
- オーダーされた相は,マグノンと呼ばれる集合的興奮モードを示します.
- マグノンはマクロスケールまで拡張でき,量子アプリケーションの可能性を秘めています.
研究 の 目的:
- シングルマグノンと超伝導量子ビットとのコヒーレントなカップリングを実証する.
- 強化された量子制御のための強力なカップリング体制を達成するために.
主な方法:
- マグノンの刺激のために,ミリメートルのサイズの鉄磁気球を使用します.
- 相互作用を媒介するために,超伝導量子ビットとマイクロ波腔を使用します.
- 調節可能なマグノン-クビットカップリングのためのパラメトリックドライブの実装.
主要な成果:
- 単一のマグノンと超伝導量子ビットとのコヒーレントな結合が達成されました.
- 緩率を上回る証明されたコップリング強度で,強いコップリング体制に入ります.
- パラメトリックドライブによる調節可能なカップリングスキームを実現しました.
結論:
- 開発されたアプローチは,万能な量子制御とマグノンの測定を可能にします.
- この研究は,潜在的な量子情報処理アプリケーションのためのハイブリッド量子システムを進歩させています.
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