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関連する概念動画

Continuous Charge Distributions01:17

Continuous Charge Distributions

8.7K
Imagine a bucket of water. It contains many molecules, of the order of 1026 molecules. Thus, although it contains discrete elements (molecules) at the microscopic level, macroscopically, it can be considered continuous. Small volume elements of water, infinitesimal compared to the bulk of the bucket's volume, still contain many molecules. Under this framework, quantized matter is approximated as continuous for practical purposes.
The electric charge can also be subjected to an analogical...
8.7K
Coulomb's Law and The Principle of Superposition01:15

Coulomb's Law and The Principle of Superposition

11.9K
Coulomb's Law describes the force experienced by two point charges under each other's presence. But what if there are more than two charges? For example, if there is a third charge, does it experience a force that is a simple combination of the individual forces due to the first two charges? Can it be described mathematically?
The Principle of Superposition answers the question. Yes, Coulomb's Law applies to each pair of charges, and the net force on each charge is the vector sum of...
11.9K
Time and frequency -Domain Interpretation of Phase-lead Control01:24

Time and frequency -Domain Interpretation of Phase-lead Control

496
Phase-lead controllers are commonly used in various control systems to enhance response speed and stability. Adjusting the brightness on a television screen offers a practical example of phase-lead control. When contrast is enhanced, a phase-lead controller is employed. Mathematically, phase-lead control is identified when the first parameter is smaller than the second.
The design of phase-lead control involves the strategic placement of poles and zeros to balance steady-state error and system...
496
The Quantum-Mechanical Model of an Atom02:45

The Quantum-Mechanical Model of an Atom

61.1K
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.
61.1K
The Uncertainty Principle04:08

The Uncertainty Principle

34.4K
Werner Heisenberg considered the limits of how accurately one can measure properties of an electron or other microscopic particles. He determined that there is a fundamental limit to how accurately one can measure both a particle’s position and its momentum simultaneously. The more accurate the measurement of the momentum of a particle is known, the less accurate the position at that time is known and vice versa. This is what is now called the Heisenberg uncertainty principle. He...
34.4K
Energy Associated With a Charge Distribution01:21

Energy Associated With a Charge Distribution

2.0K
The work done to bring a charge through a distance r is given by the potential difference between the initial and the final position. To assemble a collection of point charges, the total work done can be expressed in terms of the product of each pair of charges divided by their separation distance, defined with respect to a suitable origin. Solving this expression gives the energy stored in a point charge distribution.
2.0K

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Updated: Mar 16, 2026

Generation and Coherent Control of Pulsed Quantum Frequency Combs
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Generation and Coherent Control of Pulsed Quantum Frequency Combs

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量子変動による電荷定量化制御

S Jezouin1, Z Iftikhar1, A Anthore1

  • 1Centre de Nanosciences et de Nanotechnologies (C2N), CNRS, Université Paris Sud-Université Paris-Saclay, Université Paris Diderot-Sorbonne Paris Cité, 91120 Palaiseau, France.

Nature
|August 5, 2016
PubMed
まとめ
この要約は機械生成です。

電荷が離散単位で存在するという基本原理である電荷定量化は完全に制御され,特徴づけられています. 研究者らは結合が強くなると 量子変動によって破壊され 導体内の電子の振る舞いの新しいスケーリング法則が 明らかになったことを観察しました

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関連する実験動画

Last Updated: Mar 16, 2026

Generation and Coherent Control of Pulsed Quantum Frequency Combs
06:42

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Published on: June 8, 2018

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Scalable Quantum Integrated Circuits on Superconducting Two-Dimensional Electron Gas Platform
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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
  • ナノテクノロジー

背景:

  • 1909年にミリカンによって確立された電荷定量化は,電子の行動に根本的なものです.
  • 電荷定量化の持続性により,計量学および検出器の回路で単一電子操作が可能になる.
  • 量子変動は,導体接続の強度が増加するにつれて,電荷の離散性を減少させます.

研究 の 目的:

  • 充電量化の完全な量子制御と特徴を 達成するためです
  • トンネリングから弾道接触まで あらゆる接続の強度で 充電量化の完全な進化を 探求すること
  • 量子と熱の変動が電荷定量化に与える影響を調査する.

主な方法:

  • 半導体ベースの調節可能な元素伝導チャネルを使用して,金属アイランドを回路に接続します.
  • 弱い (トンネル) から完璧な (弾道) 接触まで,接続の強さの全範囲をスキャンしました.
  • 熱の変動を研究するために,高温での行動を調査した.

主要な成果:

  • 弾道的限界に近づく量子波動による電荷定量化の破壊を観測した.
  • 電子の反射確率の平方根で定量化された電荷のスケールで,現在の理論的体制を超えた法則です.
  • 熱変動は高温で電荷定量化と普遍的な平方根スケーリングを指数関数的に抑制する.

結論:

  • 異なる接続強度で充電量化の完全な量子制御と特徴を証明した.
  • 量子と熱の変動による電荷定量化のための新しいスケーリング法則を明らかにした.
  • この発見は,単一電子回路,トポロジカル量子コンピューティング,ナノ電子機器の量子工学の進歩に不可欠です.