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Atomic Structure01:33

Atomic Structure

210.1K
Overview
210.1K
Atomic Structure01:17

Atomic Structure

104.4K
The Greek philosopher Democritus proposed that everything on Earth is made up of tiny particles called atomos, Greek for "indivisible," from which the modern term "atom" is derived. In the 19th century, John Dalton proposed the atomic theory that is still largely correct today. He put forth five postulates to explain how atoms made up the world around us. (1) All matter is composed of infinitely small particles or atoms. (2) All atoms of a given element are identical to one...
104.4K
Atomic Mass01:52

Atomic Mass

70.3K
Atoms — and the protons, neutrons, and electrons that compose them — are extremely small. For example, a carbon atom weighs less than 2 × 10−23 g. When describing the properties of tiny objects such as atoms, we use appropriately small units of measure, such as the atomic mass unit (amu). The amu was originally defined based on hydrogen, the lightest element, then later in terms of oxygen. Since 1961, it has been defined with regard to the most abundant isotope of carbon, atoms of which...
70.3K
Atomic Orbitals02:44

Atomic Orbitals

44.1K
An atomic orbital represents the three-dimensional regions in an atom where an electron has the highest probability to reside. The radial distribution function indicates the total probability of finding an electron within the thin shell at a distance r from the nucleus. The atomic orbitals have distinct shapes which are determined by l, the angular momentum quantum number. The orbitals are often drawn with a boundary surface, enclosing densest regions of the cloud.
44.1K
Hybridization of Atomic Orbitals I03:24

Hybridization of Atomic Orbitals I

67.6K
The mathematical expression known as the wave function, ψ, contains information about each orbital and the wavelike properties of electrons in an isolated atom. When atoms are bound together in a molecule, the wave functions combine to produce new mathematical descriptions that have different shapes. This process of combining the wave functions for atomic orbitals is called hybridization and is mathematically accomplished by the linear combination of atomic orbitals. The new orbitals that...
67.6K
Hybridization of Atomic Orbitals II03:35

Hybridization of Atomic Orbitals II

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sp3d and sp3d 2 Hybridization
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Atomic Scale Structural Studies of Macromolecular Assemblies by Solid-state Nuclear Magnetic Resonance Spectroscopy
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Atomic Scale Structural Studies of Macromolecular Assemblies by Solid-state Nuclear Magnetic Resonance Spectroscopy

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原子ごとに組み立てられた合成三次元原子構造

Daniel Barredo1, Vincent Lienhard2, Sylvain de Léséleuc2

  • 1Laboratoire Charles Fabry, Institut d'Optique Graduate School, CNRS, Université Paris-Saclay, Palaiseau, France. daniel.barredo@gmail.com.

Nature
|September 7, 2018
PubMed
まとめ
この要約は機械生成です。

研究者たちは 72個まで個別に制御される 3Dの原子配列を 欠陥のないものとして作成しました 量子ビットを任意の幾何学で配置することで 拡張可能な量子シミュレーションと コンピューティングが可能になります

さらに関連する動画

Atomically Traceable Nanostructure Fabrication
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Atomically Traceable Nanostructure Fabrication

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Probing The Structure And Dynamics Of Nucleosomes Using Atomic Force Microscopy Imaging
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Probing The Structure And Dynamics Of Nucleosomes Using Atomic Force Microscopy Imaging

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関連する実験動画

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Atomic Scale Structural Studies of Macromolecular Assemblies by Solid-state Nuclear Magnetic Resonance Spectroscopy
14:55

Atomic Scale Structural Studies of Macromolecular Assemblies by Solid-state Nuclear Magnetic Resonance Spectroscopy

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Atomically Traceable Nanostructure Fabrication
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Probing The Structure And Dynamics Of Nucleosomes Using Atomic Force Microscopy Imaging
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Probing The Structure And Dynamics Of Nucleosomes Using Atomic Force Microscopy Imaging

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科学分野:

  • 量子科学と技術
  • 原子,分子,光学物理学
  • 量子コンピューティングとシミュレーション

背景:

  • 個別制御された量子ビット (量子ビット) を大量に実現することは,量子コンピューティングとシミュレーションにとって極めて重要です.
  • 原子システムでは 拡張可能で同一の量子ビットと 環境との分離ができますが 単一の原子制御で 3次元へのアクセスは 重要な課題です

研究 の 目的:

  • 個別に制御された原子の任意の形状の三次元 (3D) 配列を組み立てる方法を開発する.
  • このアプローチのスケーラビリティを 将来の量子技術で実証するためです

主な方法:

  • ホログラムの方法と プログラム可能な光学ピンチを使って 単一の原子を並べた
  • 欠陥のない3D配列を 原子ごとに組み立てた
  • 72個までの単一の原子を含む配列の制御を証明した.

主要な成果:

  • 単一の原子の任意の形状の3D配列を 組み立てました
  • 標的構造で最大72個の原子の正確な配置を達成しました.
  • 量子シミュレーションの 可能性を示した 3D空間で並べられた 数十個の量子ビット

結論:

  • 開発された技術は,大規模でスケーラブルな3D量子ビット配列の作成を可能にします.
  • 何百もの個別に制御された 量子ビットを持つシステムの実現につながります
  • 先進的な量子シミュレーションと コンピューティングアプリケーションの道を開く