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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

55.5K
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.
55.5K
Fermi Level Dynamics01:12

Fermi Level Dynamics

523
The vacuum level denotes the energy threshold required for an electron to escape from a material surface. It is usually positioned above the conduction band of a semiconductor and acts as a benchmark for comparing electron energies within various materials.
Electron affinity in semiconductors refers to the energy gap between the minimum of its conduction band and the vacuum level and it is a critical parameter in determining how easily a semiconductor can accept additional electrons.
The work...
523
Fermi Level01:18

Fermi Level

1.3K
The Fermi-Dirac function is represented by an S-shaped curve indicating the probability of an energy state being occupied by an electron at a given temperature. The Fermi level is the energy level at which there is a fifty percent chance of finding an electron, and it is positioned between the lower-energy valence band and the higher-energy conduction band.
At absolute zero temperature, electrons fill all energy states up to the Fermi level, leaving upper states empty. As the temperature rises,...
1.3K
The de Broglie Wavelength02:32

The de Broglie Wavelength

32.2K
In the macroscopic world, objects that are large enough to be seen by the naked eye follow the rules of classical physics. A billiard ball moving on a table will behave like a particle; it will continue traveling in a straight line unless it collides with another ball, or it is acted on by some other force, such as friction. The ball has a well-defined position and velocity or well-defined momentum, p = mv, which is defined by mass m and velocity v at any given moment. This is the typical...
32.2K
Electron Orbital Model01:18

Electron Orbital Model

71.0K
Orbitals are the areas outside of the atomic nucleus where electrons are most likely to reside. They are characterized by different energy levels, shapes, and three-dimensional orientations. The location of electrons is described most generally by a shell or principal energy level, then by a subshell within each shell, and finally, by individual orbitals found within the subshells.
The first shell is closest to the nucleus, and it has only one subshell with a single spherical orbital called the...
71.0K
Valence Bond Theory02:42

Valence Bond Theory

10.5K
Coordination compounds and complexes exhibit different colors, geometries, and magnetic behavior, depending on the metal atom/ion and ligands from which they are composed. In an attempt to explain the bonding and structure of coordination complexes, Linus Pauling proposed the valence bond theory, or VBT, using the concepts of hybridization and the overlapping of the atomic orbitals. According to VBT, the central metal atom or ion (Lewis acid) hybridizes to provide empty orbitals of suitable...
10.5K

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Resonance Fluorescence of an InGaAs Quantum Dot in a Planar Cavity Using Orthogonal Excitation and Detection
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Resonance Fluorescence of an InGaAs Quantum Dot in a Planar Cavity Using Orthogonal Excitation and Detection

Published on: October 13, 2017

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半導体量子ドット配列を用いたフェルミ-ハバードモデルの量子シミュレーション

T Hensgens1, T Fujita1, L Janssen1

  • 1QuTech and Kavli Institute of Nanoscience, TU Delft, 2600 GA Delft, The Netherlands.

Nature
|August 4, 2017
PubMed
まとめ
この要約は機械生成です。

半導体量子ドットにおける静電的な乱れを制御する方法を開発し,フェルミ-ハバードモデルを正確にエミュレーションすることができました. この突破により 複雑な量子相関や 物質のエキゾチックな相の研究が可能になりました

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関連する実験動画

Last Updated: Dec 5, 2025

Resonance Fluorescence of an InGaAs Quantum Dot in a Planar Cavity Using Orthogonal Excitation and Detection
12:57

Resonance Fluorescence of an InGaAs Quantum Dot in a Planar Cavity Using Orthogonal Excitation and Detection

Published on: October 13, 2017

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Silicon Metal-oxide-semiconductor Quantum Dots for Single-electron Pumping
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科学分野:

  • 量子物理学
  • 凝縮物質物理学
  • 材料科学

背景:

  • 相互作用するフェルミオンの強い量子相関は物質の複雑な相につながり,古典的な計算に挑戦します.
  • これらの現象を研究するためにフェルミ-ハバードモデルを真似るために人工量子システムが開発されています.
  • 固体プラットフォームは,静電性障害による課題に直面し,エミュレーションの努力を制限します.

研究 の 目的:

  • 半導体量子ドットにおける 静電障害の制御された抑制を証明する.
  • 固体システムを使って フェルミ-ハバード物理学の精密なエミュレーションを可能にします
  • コレクティブ・クーロン・ブロックを,モット・メタル・トゥ・アイソレーター・トランジションの有限サイズのアナログとして特徴づける.

主な方法:

  • ゲートで定義された量子ドットと 静電的に閉じ込められた伝導帯の電子を使う.
  • 半自動でスケーラブルな実験ツールを使用して均一な制御を行う.
  • 電子充填と近隣トンネル結合を量子ドット配列で独立に設定する.

主要な成果:

  • 半導体量子ドットにおける静電障害の制御された抑制を証明した.
  • フェルミ・ハバード系を シミュレートした
  • エンジニアリングシステムにおける コロンブブロックの移行を特徴づけた.

結論:

  • 量子ドットにおける無秩序の抑制は フェルミ-ハバードモデルエミュレーションを容易にする.
  • このアプローチは,固体システムにおける複雑な多体物理学の調査のための道を開きます.
  • 自動化と製造の進歩は 量子ドットベースの多体物理学の研究の範囲を広げます