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German physicist Wilhelm Röntgen (1845–1923) was experimenting with electrical current when he discovered that a mysterious and invisible "ray" would pass through his flesh but leave an outline of his bones on a screen coated with a metal compound. In 1895, Röntgen made the first durable record of the internal parts of a living human: an "X-ray" image (as it came to be called) of his wife’s hand. Scientists worldwide quickly began their own experiments with...
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The Quantum-Mechanical Model of an Atom02:45

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Shortly after de Broglie published his ideas that the electron in a hydrogen atom could be better thought of as being a circular standing wave instead of a particle moving in quantized circular orbits, Erwin Schrödinger extended de Broglie’s work by deriving what is now known as the Schrödinger equation. When Schrödinger applied his equation to hydrogen-like atoms, he was able to reproduce Bohr’s expression for the energy and, thus, the Rydberg formula governing...
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検知されていない光子による量子画像撮影.

Gabriela Barreto Lemos1, Victoria Borish2, Garrett D Cole3

  • 11] Institute for Quantum Optics and Quantum Information, Austrian Academy of Sciences, Boltzmanngasse 3, Vienna A-1090, Austria [2] Vienna Center for Quantum Science and Technology (VCQ), Faculty of Physics, University of Vienna, A-1090 Vienna, Austria.

Nature
|August 29, 2014
PubMed
まとめ

私たちは,誘導された放出なしに誘導された相関性を使用した新しい量子画像技術を実演します. この方法は,決して相互作用しない光子を使って物体をイメージし,利用できない検出器の波長でイメージングを可能にします.

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科学分野:

  • 量子力学は,量子力学という
  • 量子情報とは,量子情報である.
  • 量子イメージングとは

背景:

  • 量子干渉は区別がつかない状態に依存しています.
  • 叠加状態を区別する情報は量子干渉を阻害する.
  • 既存の量子画像技術では,検出された探査光子または偶然検出がしばしば必要になります.

研究 の 目的:

  • 新しい量子画像コンセプトの導入と実証:誘導された放出なしに誘導された一貫性.
  • オブジェクトと相互作用しない光子を使用してイメージングを可能にします.
  • 量子イメージングにおける探査波長検出の限界を克服するために.

主な方法:

  • 単一のポンプレーザーで照らされる2つの非線形結晶 (NL1,NL2) を使用して,光子ペアを作成します.
  • NL1からアイドルフォトンを物体を通して誘導し,NL2からアイドルフォトンを物体と重複させる.
  • 両方の結晶から信号フォトンを干渉して,オブジェクトのイメージを再構築します.

主要な成果:

  • 決して物体と相互作用しなかった信号光子を用いて,物体を成功裏にイメージした.
  • 検出された信号光子に不透明または見えないオブジェクトのイメージングを実証した.
  • 探査フォトン検出と偶然数値の必要性を排除することによって,相互作用のない,ゴースト画像から根本的に異なる方法を展示しました.

結論:

  • この技術は,検出されていない光子による,およびそれに関する知識の抽出を可能にします.
  • これは,探査機の波長に敏感な検出器の必要性を回避します.
  • この研究は,量子情報とイメージングの重要な進歩を表しています.