関連する実験動画
Updated: Jan 23, 2026

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Generation and Coherent Control of Pulsed Quantum Frequency Combs
Published on: June 8, 2018
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一貫した量子相滑り
O V Astafiev1, L B Ioffe, S Kafanov
1NEC Green Innovation Research Laboratories, 34 Miyukigaoka, Tsukuba, Ibaraki, 305-8501, Japan. astf@zb.jp.nec.com
Nature
|April 21, 2012
まとめ
科学者は,百年の昔の予測であるコヒーレント量子相滑り (CQPS) を,乱れたインジウム酸化物の中で観察しました. この現象は,ジョセフソン効果と二重で,超伝導電子と量子計測学の新しい道を開く.
科学分野:
- 凝縮物質物理学 凝縮物質物理学
- 量子力学は,量子力学という
背景:
- 一世紀前に発見された超伝導性は,実験的に検証されていないコヒーレント量子相滑り (CQPS) の重要な予測を持っています.
- CQPSは理論的にはジョセフソン効果と二重であり,以前観察された不協調なフェーズスライプとは異なり,一貫したフクロス転送が含まれています.
研究 の 目的:
- 超伝導性理論の根本的な予測である一貫した量子相滑り (CQPS) を実験的に実証する.
- CQPS観測を達成するために,準粒子分散によって引き起こされる実験的な課題を克服するために.
主な方法:
- 超伝導体 - 絶縁体移行の近くで,強烈に乱れたインジウム酸化物超伝導体を利用しました.
- CQPSを観察するために,超伝導ループの狭いセグメントを調査しました.
主要な成果:
- 量子相滑り (Coherent Quantum Phase Slip,CQPS) が初めて直接観測されました.
- この効果は,異なる数のフクロス量子を持つ量子状態の重置によって示された.
結論:
- ジョセフソン効果と同様のCQPSの実験的実証は,重要な進歩である.
- この観測により,超伝導電子や量子計測学の新たな応用が期待される.
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