ジョセフソン定電流量子ビット
1Department of Applied Physics and Delft Institute for Microelectronics and Submicron Technologies, Delft University of Technology, Post Office Box 5046, 2600 GA Delft, Netherlands. Department of Electrical Engineering and Compu.
Science (New York, N.Y.)
|August 14, 1999
まとめ
ジョセフソン・ジャンクションを用いた新しい量子ビットの設計が発表され,大規模な量子コンピューティングのための電子束リトグラフィーによる製造を可能にします. この設計は,制御された磁気流の操作を通じて,量子スーパーポジションとエンタグリングを容易にする.
科学分野:
- 量子コンピューティング
- 超伝導回路について
- ナノ製造によるナノ製造です.
背景:
- 拡張可能な量子コンピュータの開発には,堅牢な量子ビットアーキテクチャが必要です.
- ジョセフソン・ジャンクションベースの量子ビットは,量子情報処理の有望な候補である.
研究 の 目的:
- 大規模量子コンピュータに統合するのに適した量子ビットを設計する.
- 制御可能な流量調節を用いた量子重置と絡み合いを可能にするために.
主な方法:
- 従来の電子束リトグラフィーを用いた製造.
- マイクロメートルのサイズのループを使って,3つまたは4つのジョセフソン接合点を使用します.
- 閉じられた磁気流のパルス式マイクロ波調節を用いたものです.
- 量子ビットから量子ビットへの転送のための超伝導フルストランスポーターの実装.
主要な成果:
- 反対の恒定電流によって特徴づけられる2つの異なる状態を持つ量子ビット設計を実証した.
- 磁気流のパルス式マイクロ波制御による量子スーパーポジションを達成した.
- キュービット間の制御されたフルス転送を有効にし,エンタグリングにつながった.
結論:
- 設計された量子ビットは,標準的なリトグラフィー技術で製造可能である.
- このアーキテクチャは,スーパーポジションとエンタグリングを含む,量子計算のための不可欠な操作をサポートしています.
- この研究は,スケーラブルな超伝導量子コンピューティングアーキテクチャの進歩に貢献します.
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