フルクソニウム:単一のクーパーペア回路で無料のオフセット

Vladimir E Manucharyan¹, Jens Koch, Leonid I Glazman

¹Departments of Physics and Applied Physics, Yale University, New Haven, CT 06520, USA.

Science (New York, N.Y.)

|October 3, 2009

まとめ

研究者は,オフセット電荷に無感な超伝導人工原子を開発し,量子回路の主要な制限を克服しました. このブレークスルーにより,強力な量子情報処理と計量学の応用が可能になる.

科学分野:

量子物理学とは,量子物理学のことです.
固体系のシステムは,固体状態のシステムです.
メトロロジー・メトロロジー

背景:

トンネル・ジャンクションを用いた単一のクーパー・ペア量子回路は,量子情報と計測学にとって有望である.
オフセット電荷,固体系におけるランダムな顕微鏡電荷は,これらの回路の性能を大きく制限する.
既存の超伝導回路は,これらの固有の電荷のために性能の劣化に敏感です.

研究の目的:

超伝導性の人工原子を設計し,オフセット電荷に免疫を与えること.
単一のクーパーペア効果に不可欠なアンハーモニーなエネルギーレベル構造を維持するために.
信頼性の高い量子情報処理と計量学アプリケーションを可能にします.

主な方法:

小型のトンネル交差点を,大容量トンネル交差点の連続配列のジョセフソン運動誘導率でシャントリングする.
すべての超伝導アイランドが少なくとも1つの大きな交差点を通じて接続されていることを保証します.
放浪電荷の影響を軽減する回路アーキテクチャの設計.

主要な成果:

超伝導性の高い人工原子が実現しました.
人工原子は,オフセット電荷に対する完全な無感性を示した.
エネルギーレベルは,単一のクーパー対効果の特徴的なアンハーモニー構造を保持した.

結論:

開発された超伝導人工原子は,量子回路におけるオフセット電荷の制限を克服する.
このイノベーションは,より安定的かつ信頼性の高い量子情報処理と計測学の道を開きます.
このデバイスは,固体量子コンピューティングを進歩させるために有望なプラットフォームを提供します.

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