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将来のジオシンクロンリンクのための量子限定光学時間転送
Emily D Caldwell1,2, Jean-Daniel Deschenes3, Jennifer Ellis1
1National Institute of Standards and Technology (NIST), Boulder, CO, USA.
Nature
|June 21, 2023
まとめ
遠隔位置を320アト秒で同期することで 量子的に限られた光学的タイムトランスファーを達成しました この画期的な発見により 強力な空間のネットワークが 精密な時間分布と 先進的な科学的応用を可能にします
科学分野:
- 物理学
- メトロロジー
- 天文学
背景:
- 光学的な時計と 光学的な時間転送は 先進的なネットワークの鍵です
- 現在の光学的タイムトランスファーには 量子限られた性能がない
- 地上と宇宙の光学時計をつなぐことで 新たな応用が可能になります
研究 の 目的:
- 量子限られた性能で 光学時間の移転を証明する
- 強固な空間の光学時間転送ネットワークを可能にします.
- 時間同期のための受信電力の要求を減らすために.
主な方法:
- 時間移転が証明された 量子限られた取得とタイミングで
- 以前より1万倍低い電力を利用した.
- 山頂から山頂まで 300キロの同期を達成しました
主要な成果:
- 遠隔サイトを 320 アット秒で同期した
- 1万倍も低い電力を使った
- 光学時間移転で 量子制限に近い性能を達成した.
結論:
- この方法は,限られた光子を持つ長距離の空間のリンクに不可欠です.
- 4.0mWの送信電力で102dBのリンク損失をサポートしています.
- 将来の地球同期軌道への移動を可能にします.
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