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関連する概念動画

Phase Transitions02:31

Phase Transitions

23.2K
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...
23.2K
Phase Transitions: Sublimation and Deposition02:33

Phase Transitions: Sublimation and Deposition

20.2K
Some solids can transition directly into the gaseous state, bypassing the liquid state, via a process known as sublimation. At room temperature and standard pressure, a piece of dry ice (solid CO2) sublimes, appearing to gradually disappear without ever forming any liquid. Snow and ice sublimate at temperatures below the melting point of water, a slow process that may be accelerated by winds and the reduced atmospheric pressures at high altitudes. When solid iodine is warmed, the solid sublimes...
20.2K
Phase Transitions: Melting and Freezing02:39

Phase Transitions: Melting and Freezing

15.2K
Heating a crystalline solid increases the average energy of its atoms, molecules, or ions, and the solid gets hotter. At some point, the added energy becomes large enough to partially overcome the forces holding the molecules or ions of the solid in their fixed positions, and the solid begins the process of transitioning to the liquid state or melting. At this point, the temperature of the solid stops rising, despite the continual input of heat, and it remains constant until all of the solid is...
15.2K
Phase Transitions: Vaporization and Condensation02:39

Phase Transitions: Vaporization and Condensation

21.5K
The physical form of a substance changes on changing its temperature. For example, raising the temperature of a liquid causes the liquid to vaporize (convert into vapor). The process is called vaporization—a surface phenomenon. Vaporization occurs when the thermal motion of the molecules overcome the intermolecular forces, and the molecules (at the surface) escape into the gaseous state. When a liquid vaporizes in a closed container, gas molecules cannot escape. As these gas phase molecules...
21.5K
Quantum Numbers02:43

Quantum Numbers

51.7K
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.
51.7K
Phase Diagrams02:39

Phase Diagrams

50.3K
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...
50.3K

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Updated: Feb 7, 2026

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

Published on: June 8, 2018

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プログラム可能な量子スピンガラスシミュレータにおける相変化

R Harris1, Y Sato2, A J Berkley2

  • 1D-Wave Systems, 3033 Beta Avenue, Burnaby, BC V5G 4M9, Canada. rharris@dwavesys.com.

Science (New York, N.Y.)
|July 14, 2018
PubMed
まとめ
この要約は機械生成です。

研究者はD-Wave量子プロセッサを使って 量子システムの磁気相をシミュレートしました パラマグネティック,アンチフェロマグネティック,スピン・グラス・フェーズ間の移行を 乱れと磁場を制御することによって観察した.

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Production and Targeting of Monovalent Quantum Dots
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Production and Targeting of Monovalent Quantum Dots

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関連する実験動画

Last Updated: Feb 7, 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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Production and Targeting of Monovalent Quantum Dots
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Production and Targeting of Monovalent Quantum Dots

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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
  • 量子力学について
  • 量子シミュレーション

背景:

  • 磁気相を理解することは 量子力学システムにおいて極めて重要です
  • 量子シミュレーションのハードウェアは これらのシステムを探査するための 新しい実験ツールを提供します

研究 の 目的:

  • 3D立方格子に相互作用するイージングスピンの量子シミュレーションを実験的に実現する.
  • 量子プロセッサを使って磁気相, 臨界乱数, 普遍指数を決定する.

主な方法:

  • D-Wave量子プロセッサを使って 8x8x8のサイズの立方形のイージングスピンをシミュレートした
  • オーダーパラメータにアクセスするために個々のスピンの状態を制御し読み出す.
  • 段階転換を誘導する効果的横断磁場.

主要な成果:

  • 3D立方格子で磁気相をシミュレートしました
  • パラマグネット,アンチフェロマグネット,スピン・グラス・フェーズ間の相変化を特定した.
  • 決定的な乱れと,システムの普遍的な指数.

結論:

  • 量子シミュレーションハードウェアは磁気相の直接実験を可能にします.
  • この研究は,複雑な磁気現象の探索における量子プロセッサの能力を実証しています.
  • 観察された相移行は,相互作用するスピンシステムの振る舞いに洞察を与えます.