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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

47.1K
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...
47.1K
Superconductor01:24

Superconductor

1.9K
A substance that reaches superconductivity, a state in which magnetic fields cannot penetrate, and there is no electrical resistance, is referred to as a superconductor. In 1911, Heike Kamerlingh Onnes of Leiden University, a Dutch physicist, observed a relation between the temperature and the resistance of the element mercury. The mercury sample was then cooled in liquid helium to study the linear dependence of resistance on temperature. It was observed that, as the temperature decreased, the...
1.9K
Types Of Superconductors01:28

Types Of Superconductors

1.7K
A superconductor is a substance that offers zero resistance to the electric current when it drops below a critical temperature. Zero resistance is not the only interesting phenomenon as materials reach their transition temperatures. A second effect is the exclusion of magnetic fields. This is known as the Meissner effect. A light, permanent magnet placed over a superconducting sample will levitate in a stable position above the superconductor. High-speed trains that levitate on strong...
1.7K
Theory of Metallic Conduction01:17

Theory of Metallic Conduction

2.0K
The conduction of free electrons inside a conductor is best described by quantum mechanics. However, a classical model makes predictions close to the results of quantum mechanics. It is called the theory of metallic conduction.
In this theory, Newton's second law of motion is used to determine the acceleration of an electron in the presence of an applied electric field. Then, its velocity is expressed via this acceleration.
An electron moves through the crystal, containing positive ions,...
2.0K
Ampere-Maxwell's Law: Problem-Solving01:17

Ampere-Maxwell's Law: Problem-Solving

1.4K
A parallel-plate capacitor with capacitance C, whose plates have area A and separation distance d, is connected to a resistor R and a battery of voltage V. The current starts to flow at t = 0. What is the displacement current between the capacitor plates at time t? From the properties of the capacitor, what is the corresponding real current?
To solve the problem, we can use the equations from the analysis of an RC circuit and Maxwell's version of Ampère's law.
For the first part of the...
1.4K
Superposition Theorem for AC Circuits01:13

Superposition Theorem for AC Circuits

1.5K
Consider encountering a circuit in a steady state where all its inputs are sinusoidal, yet they do not all possess the same frequency. Such a circuit is not classified as an alternating current (AC) circuit, and consequently, its currents and voltages will not exhibit sinusoidal behavior. However, this circuit can be analyzed using the principle of superposition.
The principle of superposition stipulates that the output of a linear circuit with several concurrent inputs is equivalent to the...
1.5K

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関連する実験動画

Updated: May 1, 2026

Silicon Metal-oxide-semiconductor Quantum Dots for Single-electron Pumping
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Silicon Metal-oxide-semiconductor Quantum Dots for Single-electron Pumping

Published on: June 3, 2015

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超伝導回路でフォン・ノイマン量子アーキテクチャの実装

Matteo Mariantoni1, H Wang, T Yamamoto

  • 1Department of Physics, University of California, Santa Barbara, CA 93106-9530, USA. matmar@physics.ucsb.edu

Science (New York, N.Y.)
|September 3, 2011
PubMed
まとめ

研究者らは,量子メモリを統合した量子中央処理ユニット (CPU) を開発した. この量子マシンは,量子フーリエ変換のようなアルゴリズムを実行し,量子コンピューティングアプリケーションの道を開く.

さらに関連する動画

Scalable Quantum Integrated Circuits on Superconducting Two-Dimensional Electron Gas Platform
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Scalable Quantum Integrated Circuits on Superconducting Two-Dimensional Electron Gas Platform

Published on: August 2, 2019

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Large Scale Energy Efficient Sensor Network Routing Using a Quantum Processor Unit
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Large Scale Energy Efficient Sensor Network Routing Using a Quantum Processor Unit

Published on: September 8, 2023

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関連する実験動画

Last Updated: May 1, 2026

Silicon Metal-oxide-semiconductor Quantum Dots for Single-electron Pumping
14:58

Silicon Metal-oxide-semiconductor Quantum Dots for Single-electron Pumping

Published on: June 3, 2015

18.0K
Scalable Quantum Integrated Circuits on Superconducting Two-Dimensional Electron Gas Platform
05:39

Scalable Quantum Integrated Circuits on Superconducting Two-Dimensional Electron Gas Platform

Published on: August 2, 2019

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Large Scale Energy Efficient Sensor Network Routing Using a Quantum Processor Unit
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Large Scale Energy Efficient Sensor Network Routing Using a Quantum Processor Unit

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科学分野:

  • 量子コンピューティング
  • コンピュータアーキテクチャ コンピュータアーキテクチャ

背景:

  • 古典的なコンピュータは,中央処理ユニットとメモリを備えたフォン・ノイマンアーキテクチャを使用しています.
  • 量子コンピューティングは,処理とデータストレージのための新しいアーキテクチャを必要とします.

研究 の 目的:

  • 量子中央処理ユニット (CPU) と量子ランダムアクセスメモリ (qRAM) を単一のチップに統合した量子中央処理ユニット (CPU) を実証する.
  • 超伝導量子ビットを使用して量子アルゴリズムを実行する量子CPUの能力をテストするために.

主な方法:

  • オンチップのqRAMでデータを交換する量子CPUアーキテクチャを開発しました.
  • 2つの超伝導量子ビット,量子バス,2つの量子メモリ,2つのゼロングレジスタを使用した.
  • 量子アルゴリズムを実行し,古典的なコンピュータに保存された命令を実行した.

主要な成果:

  • 量子フーリエ変換アルゴリズムの66%のプロセスの精度を達成しました.
  • 3量子ビットのToffoliクラスのORフェーズゲートで98%のフェーズフィデリティが実証されました.
  • 7つの量子要素を含む量子コードを成功裏に実行しました.

結論:

  • 実証された量子アーキテクチャは,将来の量子コンピュータのための実行可能なアプローチを提供します.
  • 結果は,数値ファクタリングと量子エラー修正コードの実装の可能性を示唆しています.
  • キュービットコヘランスのさらなる改善は,パフォーマンスを向上させると予想されています.