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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

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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 hydrogen spectra.
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Emission Spectra02:39

Emission Spectra

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When solids, liquids, or condensed gases are heated sufficiently, they radiate some of the excess energy as light. Photons produced in this manner have a range of energies, and thereby produce a continuous spectrum in which an unbroken series of wavelengths is present.
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Electromagnetic Waves in Matter01:30

Electromagnetic Waves in Matter

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Electromagnetic waves can travel in the vacuum as well as in matter. For example light, which is an electromagnetic wave, can travel through air, water, or glass.
Consider the electromagnetic wave passing through a dielectric medium. In such a case, Maxwell's equations get modified. In Ampere's law, ε0 , the dielectric permittivity of free space is replaced with ε, the permittivity of dielectric. Also, the vacuum permeability μ0 is replaced by the permeability of the medium, μ.
Furthermore,...
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The de Broglie Wavelength02:32

The de Broglie Wavelength

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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...
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Electromagnetic Wave Equation01:24

Electromagnetic Wave Equation

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Maxwell's equations for electromagnetic fields are related to source charges, either static or moving. These fields act on a test charge, whose trajectory can thus be determined using suitable boundary conditions. The objective of electromagnetism is thus theoretically complete.
However, although electric and magnetic fields were first introduced as mathematical constructs to simplify the description of mutual forces between charges, a natural question emerges from Maxwell's equations:...
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The Bohr Model02:18

The Bohr Model

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Following the work of Ernest Rutherford and his colleagues in the early twentieth century, the picture of atoms consisting of tiny dense nuclei surrounded by lighter and even tinier electrons continually moving about the nucleus was well established. This picture was called the planetary model since it pictured the atom as a miniature “solar system” with the electrons orbiting the nucleus like planets orbiting the sun. The simplest atom is hydrogen, consisting of a single proton as the...
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Scalable Quantum Integrated Circuits on Superconducting Two-Dimensional Electron Gas Platform
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サブサイクル量子電動力学

C Riek1, P Sulzer1, M Seeger1

  • 1Department of Physics and Center for Applied Photonics, University of Konstanz, D-78457 Konstanz, Germany.

Nature
|January 20, 2017
PubMed
まとめ
この要約は機械生成です。

研究者は真空レベルの下にある 量子変動を観察して 中赤外線の圧縮された真空ノイズを生成しました 光を研究することで,新しい量子技術と精度測定が可能になります.

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Generation and Coherent Control of Pulsed Quantum Frequency Combs
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科学分野:

  • 量子光学
  • 量子情報科学

背景:

  • 圧縮状態は真空レベル以下で量子変動を示し,量子情報と計測学にとって不可欠です.
  • 現在の分析方法 (ホモダイニング,光子相関) は特定のスペクトル範囲に限定され,光子の吸収/増幅を必要とする.

研究 の 目的:

  • 時間の領域で中赤外線の圧縮された真空のノイズを生成し,特徴づけます.
  • 吸収や増幅なしに量子変動を研究するための新しい方法を開発する.

主な方法:

  • 中赤外線でタイムロックされた圧縮真空のノイズを生成する.
  • フェムト秒レーザーパルスによる電気光学サンプリングを用いた時間領域分析.
  • 騒音幅を真空レベルと直接比較する.

主要な成果:

  • 観測されたサブサイクル間隔は,真空場の振幅を大幅に下回る.
  • 隣接する間隔で 波動が強くなって 量子放射線の相関を示している
  • フィールド吸収/増幅なしで適用可能な非線形,オフ共振アプローチを開発しました.

結論:

  • この研究により,中赤外線の量子波動を 直接時間領域で研究することが可能になりました
  • この新しい方法は,量子計測学と特定のエネルギー範囲での光物質の相互作用の研究の道を開きます.
  • 基本的量子力学の研究を容易にする.真空と熱の背景条件に近い.