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分子スピントランジスタを使用した単一の核スピンの電子読み出し
Romain Vincent1, Svetlana Klyatskaya, Mario Ruben
1Institut Néel, CNRS et Université Joseph Fourier, BP 166, F-38042 Grenoble Cedex 9, France.
Nature
|August 17, 2012
まとめ
研究者らは,単一分子磁石における個々の核スピンの電子読み取りを実証した. この量子制御の突破は,長寿命の量子情報保存と新しい量子コンピューティングデバイスの可能性を秘めています.
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.
- ナノテクノロジー ナノテクノロジー
背景:
- 電子のスピンは,従来,量子情報のために使用されているが,環境結合により短時間の相関性がある.
- 核スピンは優れた隔離性とより長い一貫性を提供しますが,操作することは困難です.
- 電子スピンによる安定した量子絡みを実現することは,依然として大きな課題です.
研究 の 目的:
- 量子情報処理のために核スピンを使用する可能性を調査する.
- 個々の核スピンに対処し,操作するための方法を開発する.
- 量子装置における単原子核スピンの可能性を調査する.
主な方法:
- 単一分子磁石を個々の金属原子をホストするプラットフォームとして利用する.
- 核のスピン状態を検出および測定するために,電子読み取り技術を使用します.
- 原子レベルでの核スピンのリラックスとコヒーレンス特性を特徴づける.
主要な成果:
- 単一の金属原子の核スピンの電子読み取りを成功裏に達成しました.
- 観測された核スピン寿命は,数十秒程度の例外的に長い.
- 核スピンの精密な制御と操作の可能性を実証した.
結論:
- 単分子磁石の個々の核スピンは,電子的に確実に読み取ることができます.
- これらの核スピンの長い寿命と安定性は,量子コンピューティングのアプリケーションにとって有望です.
- この研究は,量子論理のための核スピンを利用する新しい量子装置の道を開く.
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