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関連する概念動画

Quantum Numbers02:43

Quantum Numbers

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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.
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Rolling Without Slipping01:09

Rolling Without Slipping

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People have observed the rolling motion without slipping ever since the invention of the wheel. For example, one can look at the interaction between a car's tires and the surface of the road. If the driver presses the accelerator to the floor so that the tires spin without the car moving forward, there must be kinetic friction between the wheels and the road's surface. If the driver slowly presses the accelerator, causing the car to move forward, the tires roll without slipping. It is...
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Rolling With Slipping01:14

Rolling With Slipping

7.9K
Rolling with slipping is a physical phenomenon that occurs when a rolling object experiences both rotational and linear motion but also experiences frictional forces that cause slipping. This phenomenon can occur in various situations, such as when a tire rolls on a wet road or a ball rolls on a rough surface.
An object's rolling motion is characterized by its rotation around its axis, while linear motion refers to the object's translational motion along a surface. Frictional forces can...
7.9K
The Quantum-Mechanical Model of an Atom02:45

The Quantum-Mechanical Model of an Atom

56.8K
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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Phase Diagrams02:39

Phase Diagrams

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A phase diagram combines plots of pressure versus temperature for the liquid-gas, solid-liquid, and solid-gas phase-transition equilibria of a substance. These diagrams indicate the physical states that exist under specific conditions of pressure and temperature and also provide the pressure dependence of the phase-transition temperatures (melting points, sublimation points, boiling points). Regions or areas labeled solid, liquid, and gas represent single phases, while lines or curves represent...
49.5K
Phase Transitions02:31

Phase Transitions

22.8K
Whether solid, liquid, or gas, a substance's state depends on the order and arrangement of its particles (atoms, molecules, or ions). Particles in the solid pack closely together, generally in a pattern. The particles vibrate about their fixed positions but do not move or squeeze past their neighbors. In liquids, although the particles are closely spaced, they are randomly arranged. The position of the particles are not fixed—that is, they are free to move past their neighbors to...
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Updated: Jan 23, 2026

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

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一貫した量子相滑り.

O V Astafiev1, L B Ioffe, S Kafanov

  • 1NEC Green Innovation Research Laboratories, 34 Miyukigaoka, Tsukuba, Ibaraki, 305-8501, Japan. astf@zb.jp.nec.com

Nature
|April 21, 2012
PubMed
まとめ
この要約は機械生成です。

科学者は,百年の昔の予測であるコヒーレント量子相滑り (CQPS) を,乱れたインジウム酸化物の中で観察しました. この現象は,ジョセフソン効果と二重で,超伝導電子と量子計測学の新しい道を開く.

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Measurement of X-ray Beam Coherence along Multiple Directions Using 2-D Checkerboard Phase Grating
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Measurement of X-ray Beam Coherence along Multiple Directions Using 2-D Checkerboard Phase Grating

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Gradient Echo Quantum Memory in Warm Atomic Vapor
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Gradient Echo Quantum Memory in Warm Atomic Vapor

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関連する実験動画

Last Updated: Jan 23, 2026

Generation and Coherent Control of Pulsed Quantum Frequency Combs
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Published on: June 8, 2018

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Measurement of X-ray Beam Coherence along Multiple Directions Using 2-D Checkerboard Phase Grating
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Gradient Echo Quantum Memory in Warm Atomic Vapor
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科学分野:

  • 凝縮物質物理学 凝縮物質物理学
  • 量子力学は,量子力学という

背景:

  • 一世紀前に発見された超伝導性は,実験的に検証されていないコヒーレント量子相滑り (CQPS) の重要な予測を持っています.
  • CQPSは理論的にはジョセフソン効果と二重であり,以前観察された不協調なフェーズスライプとは異なり,一貫したフクロス転送が含まれています.

研究 の 目的:

  • 超伝導性理論の根本的な予測である一貫した量子相滑り (CQPS) を実験的に実証する.
  • CQPS観測を達成するために,準粒子分散によって引き起こされる実験的な課題を克服するために.

主な方法:

  • 超伝導体 - 絶縁体移行の近くで,強烈に乱れたインジウム酸化物超伝導体を利用しました.
  • CQPSを観察するために,超伝導ループの狭いセグメントを調査しました.

主要な成果:

  • 量子相滑り (Coherent Quantum Phase Slip,CQPS) が初めて直接観測されました.
  • この効果は,異なる数のフクロス量子を持つ量子状態の重置によって示された.

結論:

  • ジョセフソン効果と同様のCQPSの実験的実証は,重要な進歩である.
  • この観測により,超伝導電子や量子計測学の新たな応用が期待される.