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関連する概念動画

The Quantum-Mechanical Model of an Atom02:45

The Quantum-Mechanical Model of an Atom

56.4K
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 hydrogen spectra.
56.4K
Semiconductors01:22

Semiconductors

1.3K
There is variation in the electrical conductivity of materials - metals, semiconductors, and insulators that are showcased with the help of the energy band diagrams.
Metals such as copper (Cu), zinc (Zn), or lead (Pb) have low resistivity and feature conduction bands that are either not fully occupied or overlap with the valence band, making a bandgap non-existent. This allows electrons in the highest energy levels of the valence band to easily transition to the conduction band upon gaining...
1.3K
Electron Configuration of Multielectron Atoms03:26

Electron Configuration of Multielectron Atoms

64.0K
The alkali metal sodium (atomic number 11) has one more electron than the neon atom. This electron must go into the lowest-energy subshell available, the 3s orbital, giving a 1s22s22p63s1 configuration. The electrons occupying the outermost shell orbital(s) (highest value of n) are called valence electrons, and those occupying the inner shell orbitals are called core electrons. Since the core electron shells correspond to noble gas electron configurations, we can abbreviate electron...
64.0K
Atomic Nuclei: Nuclear Spin State Overview01:03

Atomic Nuclei: Nuclear Spin State Overview

1.9K
NMR-active nuclei have energy levels called 'spin states' that are associated with the orientations of their nuclear magnetic moments. In the absence of a magnetic field, the nuclear magnetic moments are randomly oriented, and the spin states are degenerate. When an external magnetic field is applied, the spin states have only 2 + 1 orientations available to them. A proton with = ½ has two available orientations. Similarly, for a quadrupolar nucleus with a nuclear spin value of one, the...
1.9K
Atomic Orbitals02:44

Atomic Orbitals

42.7K
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.
42.7K
Atomic Nuclei: Nuclear Spin01:08

Atomic Nuclei: Nuclear Spin

4.9K
All atomic particles possess an intrinsic angular momentum, or 'spin'. Electrons, protons, and neutrons each have a spin value of ½, although protons and neutrons in nuclei may have higher half-integer spins owing to energetic factors.
Atomic nuclei have a net nuclear spin, , which can have an integer or half-integer value. In atomic nuclei, the spins of protons are paired against each other but not with neutrons, and vice versa. Consequently, an even number of protons does not contribute to...
4.9K

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Updated: Jan 8, 2026

All-electronic Nanosecond-resolved Scanning Tunneling Microscopy: Facilitating the Investigation of Single Dopant Charge Dynamics
11:33

All-electronic Nanosecond-resolved Scanning Tunneling Microscopy: Facilitating the Investigation of Single Dopant Charge Dynamics

Published on: January 19, 2018

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シリコンの11 キビット原子プロセッサ

Hermann Edlbauer1, Junliang Wang1, A M Saffat-Ee Huq1

  • 1Silicon Quantum Computing Pty Ltd, UNSW Sydney, Sydney, New South Wales, Australia.

Nature
|December 17, 2025
PubMed
まとめ
この要約は機械生成です。

この研究は,シリコンのリン原子を用いた 11 キビット量子プロセッサを実証しています. 研究者は複数の核スピンレジスタの間で高精度エンタグリングを達成し,スケーラブルな量子コンピューティングの重要なステップとなりました.

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Silicon Metal-oxide-semiconductor Quantum Dots for Single-electron Pumping
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Silicon Metal-oxide-semiconductor Quantum Dots for Single-electron Pumping

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Probing C84-embedded Si Substrate Using Scanning Probe Microscopy and Molecular Dynamics
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Probing C84-embedded Si Substrate Using Scanning Probe Microscopy and Molecular Dynamics

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関連する実験動画

Last Updated: Jan 8, 2026

All-electronic Nanosecond-resolved Scanning Tunneling Microscopy: Facilitating the Investigation of Single Dopant Charge Dynamics
11:33

All-electronic Nanosecond-resolved Scanning Tunneling Microscopy: Facilitating the Investigation of Single Dopant Charge Dynamics

Published on: January 19, 2018

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Silicon Metal-oxide-semiconductor Quantum Dots for Single-electron Pumping
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Silicon Metal-oxide-semiconductor Quantum Dots for Single-electron Pumping

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Probing C84-embedded Si Substrate Using Scanning Probe Microscopy and Molecular Dynamics
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Probing C84-embedded Si Substrate Using Scanning Probe Microscopy and Molecular Dynamics

Published on: September 28, 2016

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科学分野:

  • 量子コンピューティング
  • 原子物理学
  • 固体システム

背景:

  • シリコンのリン原子の核スピンは 量子コンピューティングに長いコヒーレンス時間と 高精度制御を提供します
  • 複数のリン原子をハイパーファインの相互作用で結合することで,マルチキビット制御と小規模の量子アルゴリズムが可能になります.
  • 量子プロセッサをスケーリングするには,複数のスピンレジスタに非局所的に高精度エンタグリングを拡張する必要があります.

研究 の 目的:

  • 高精度,非ローカルな絡み合いを可能にする 11 キビット原子プロセッサを開発し,実証する.
  • 量子情報処理のための相互接続された核スピンレジスタの性能を調査する.
  • 原子プロセッサを用いた 容認性量子コンピューティングを進める

主な方法:

  • 2つの多核スピンレジスタを電子交換相互作用で接続した11キビットプロセッサを設計した.
  • 高精度シングルとマルチクビットゲートを達成するための高度な校正と制御プロトコル.
  • グリーンベルガー-ホーン-ゼイリンガー (GHZ) 状態生成を含む,局所的および非局所的核スピンペアの絡み合いを実行した.

主要な成果:

  • シングルとマルチクビットゲートフェデリティは99.10%から99.99%まで.
  • 様々なスピンペアの組み合わせで 99.5%までの最先端のベル状態の忠誠性を実証しました.
  • GHZ状態を生成し,最大8つの核スピンの絡み合いを示した.

結論:

  • 相互接続された核スピンレジスタの間で高精度操作を確立した.
  • 原子プロセッサでスケーラブルで 欠陥を許容する量子コンピューティングの 重要なマイルストーンを実現しました
  • 開発されたプロセッサのアーキテクチャと制御方法は,将来の量子技術にとって有望です.