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関連する概念動画

Double Resonance Techniques: Overview01:12

Double Resonance Techniques: Overview

276
Double resonance techniques in Nuclear Magnetic Resonance (NMR) spectroscopy involve the simultaneous application of two different frequencies or radiofrequency pulses to manipulate and observe two distinct nuclear spins. One important application of double resonance is spin decoupling, which selectively suppresses coupling with one type of nucleus while observing the NMR signal from another nucleus, simplifying the spectrum and enhancing resolution.
Spin decoupling is usually achieved by...
276
Resonance and Hybrid Structures02:16

Resonance and Hybrid Structures

17.6K
According to the theory of resonance, if two or more Lewis structures with the same arrangement of atoms can be written for a molecule, ion, or radical, the actual distribution of electrons is an average of that shown by the various Lewis structures.
Resonance Structures and Resonance Hybrids
The Lewis structure of a nitrite anion (NO2−) may actually be drawn in two different ways, distinguished by the locations of the N–O and N=O bonds.
17.6K
Resonance02:52

Resonance

55.3K
The Lewis structure of a nitrite anion (NO2−) may actually be drawn in two different ways, distinguished by the locations of the N-O and N=O bonds. 
55.3K
Quantum Numbers02:43

Quantum Numbers

35.5K
It is said that the energy of an electron in an atom is quantized; that is, it can be equal only to certain specific values and can jump from one energy level to another but not transition smoothly or stay between these levels.
35.5K
Standing Waves in a Cavity01:28

Standing Waves in a Cavity

1.0K
A household microwave and lasers are examples of standing electromagnetic waves in a cavity. When two conducting metal plates are placed parallel at the nodal planes, it creates a cavity where standing waves are formed. The cavity between the two planes is analogous to a stretched string held at the points x = 0 and x = L. Here, the distance 'L' between the two planes must be an integer multiple of half of the wavelength. The wavelengths that satisfy this condition are given by:
1.0K
The Quantum-Mechanical Model of an Atom02:45

The Quantum-Mechanical Model of an Atom

42.9K
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.
42.9K

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関連する実験動画

Updated: Aug 31, 2025

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

Generation and Coherent Control of Pulsed Quantum Frequency Combs

Published on: June 8, 2018

9.1K

複雑な量子状態を生成する共振メタ表面

Tomás Santiago-Cruz1,2, Sylvain D Gennaro3,4, Oleg Mitrofanov3,5

  • 1Max Planck Institute for the Science of Light, 91058 Erlangen, Germany.

Science (New York, N.Y.)
|August 25, 2022
PubMed
まとめ
この要約は機械生成です。

半導体メタ表面は,モメンタム保存の制約を緩和することで,汎用的な量子状態工学を可能にします. これらの新しい非線形メタ表面は 絡み合った光子の放出を刺激し 量子情報技術の発展の道を開きます

さらに関連する動画

Demonstration of Equal-Intensity Beam Generation by Dielectric Metasurfaces
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Demonstration of Equal-Intensity Beam Generation by Dielectric Metasurfaces

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Quantum State Engineering of Light with Continuous-wave Optical Parametric Oscillators
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Quantum State Engineering of Light with Continuous-wave Optical Parametric Oscillators

Published on: May 30, 2014

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関連する実験動画

Last Updated: Aug 31, 2025

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

Generation and Coherent Control of Pulsed Quantum Frequency Combs

Published on: June 8, 2018

9.1K
Demonstration of Equal-Intensity Beam Generation by Dielectric Metasurfaces
09:33

Demonstration of Equal-Intensity Beam Generation by Dielectric Metasurfaces

Published on: June 7, 2019

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Quantum State Engineering of Light with Continuous-wave Optical Parametric Oscillators
09:23

Quantum State Engineering of Light with Continuous-wave Optical Parametric Oscillators

Published on: May 30, 2014

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科学分野:

  • 量子光学
  • 材料科学
  • ナノフォトニクス

背景:

  • 量子状態の工学は 量子フォトニクス技術にとって不可欠です
  • 自動パラメトリックダウン変換や4波混合のような伝統的な方法は,モメンタム保存のために制限があります.
  • 非線形メタ表面は,これらの制約を緩和することによって,量子状態に対する制御を強化します.

研究 の 目的:

  • 先進的な量子状態の工学のための非線形メタ表面の使用を調査する.
  • 光子の生成におけるモメンタム保存の限界を克服する.
  • 複合的な多周波数量子状態の生成を証明する

主な方法:

  • 連続体共鳴における高品質の因子,準結合状態を持つ半導体メタ表面を使用した.
  • 絡み合った光子を生成するために自発的なパラメトリックダウン変換を使用します.
  • 量子真空場を強化して 光子の放出を助長した

主要な成果:

  • 多重の狭い共鳴帯の中で,不変質の絡み合っている光子の放出が強化された.
  • 幅広いスペクトル範囲でクラスター状態を含む多周波数量子状態の生成が実証されています.
  • 異なる波長でポンプされた単一のまたは複数の共振を使用して量子状態を生成する能力を示しました.

結論:

  • 非線形メタ表面は量子状態の工学のための多用途なプラットフォームです.
  • これらのメタ表面は 複雑な量子状態を生み出す可能性を大幅に拡大します
  • 開発されたメタ表面は量子情報アプリケーションのソースとして大きな希望を示しています.