ダイヤのシングルスピン測定と制御のためのスピンライトコヒーレンス
B B Buckley1, G D Fuchs, L C Bassett
1Center for Spintronics and Quantum Computation, University of California, Santa Barbara, CA 93106, USA.
Science (New York, N.Y.)
|October 16, 2010
まとめ
ダイヤモンドの窒素空白センターのスピン状態を測定および制御するための新しい方法を,光を用いて実証しました. このブレークスルーにより,破壊的でない量子測定とスケーラブルな量子情報処理が可能になる.
科学分野:
- 量子光学とは,量子光学である.
- 固体量子情報科学とは,固体量子情報科学である.
- ダイヤモンド量子技術は,ダイヤモンドの量子技術です.
背景:
- ダイヤモンドの窒素空白 (NV) センターは,長いスピンコヒーレンス時間により,量子技術の有望な量子ビットです.
- 従来のNVスピン状態読み取りは,光学的で破壊的で,アプリケーションを制限します.
- 非破壊的な測定と一貫した制御技術の開発は,量子情報処理の進歩に不可欠です.
研究 の 目的:
- 光を用いた個々のNVセンターの非破壊的なスピン測定方法を実証する.
- 軽物質相互作用を通じてNVセンターの一貫したスピン操作を達成するために.
- NVスピンと光子間のスケーラブルな量子情報交換のための基礎を築く.
主な方法:
- NVセンターの分散型,単回転の読み取りのためにファラデー効果を使用しました.
- NVセンターの一貫したスピン操作のために,光学的なスターク効果を使用した.
- 量子情報伝送のための軽量物質の相互作用を調査した.
主要な成果:
- 個々のNVセンターの非破壊的なスピン測定を,光学的手段で成功裏に実証しました.
- 光誘導効果を用いたNVセンターのコヒーレントなスピン操作を達成した.
- 一貫したスピン・フォトン・インターフェースの基盤を確立した.
結論:
- 分散光物質結合は,NVスピン状態の一貫した制御と非破壊的な測定の両方を可能にします.
- これらの技術は,スケーラブルな量子情報処理と長距離での絡み合いには不可欠です.
- 実証された方法は,NVセンターを利用した高度な量子技術への道を開く.
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