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関連する概念動画

Superconductor01:24

Superconductor

2.0K
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...
2.0K
Types Of Superconductors01:28

Types Of Superconductors

1.8K
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...
1.8K
Ampere-Maxwell's Law: Problem-Solving01:17

Ampere-Maxwell's Law: Problem-Solving

1.3K
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...
1.3K
Adiabatic Processes for an Ideal Gas01:18

Adiabatic Processes for an Ideal Gas

4.3K
When an ideal gas is compressed adiabatically, that is, without adding heat, work is done on it, and its temperature increases. In an adiabatic expansion, the gas does work, and its temperature drops. Adiabatic compressions actually occur in the cylinders of a car, where the compressions of the gas-air mixture take place so quickly that there is no time for the mixture to exchange heat with its environment. Nevertheless, because work is done on the mixture during the compression, its...
4.3K
The Quantum-Mechanical Model of an Atom02:45

The Quantum-Mechanical Model of an Atom

61.3K
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.
61.3K
Design Example: Capacitance Multiplier Circuit01:20

Design Example: Capacitance Multiplier Circuit

1.7K
In integrated circuit technology, a capacitance multiplier is often utilized to produce a larger capacitance value when a small physical capacitance falls short. This is achieved by a circuit that multiplies capacitance values by a factor of up to 1000, such that a 10-pF capacitor can replicate the performance of a 100-nF capacitor.
The circuit illustrated in Figure 1 below incorporates two op-amps, with the first operating as a voltage follower and the second acting as an inverting amplifier.
1.7K

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関連する実験動画

Updated: Mar 19, 2026

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

10.5K

超伝導回路によるデジタル化アディアバティック量子コンピューティング

R Barends1, A Shabani2, L Lamata3

  • 1Google Inc., Santa Barbara, California 93117, USA.

Nature
|June 10, 2016
PubMed
まとめ
この要約は機械生成です。

研究者は超伝導システムで デジタル化されたアディアバティック量子コンピューティングを開発しました このハイブリッドアプローチは 複雑な物理や化学の問題を解決するために アディアバティックとデジタル量子コンピューティングの強みを組み合わせています

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

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関連する実験動画

Last Updated: Mar 19, 2026

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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Silicon Metal-oxide-semiconductor Quantum Dots for Single-electron Pumping
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Gradient Echo Quantum Memory in Warm Atomic Vapor
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科学分野:

  • 量子コンピューティング
  • 固体物理学
  • コンピュータ化学

背景:

  • アディアバティック量子コンピューティングは 一般的な問題解決が可能ですが 雑音や接続性などの ハードウェアの限界に直面しています
  • デジタル量子コンピューティングは柔軟性とエラー修正を提供しますが,問題特有のアルゴリズムを使用します.

研究 の 目的:

  • アディアバティックとデジタル量子コンピューティングの利点を組み合わせる
  • デジタル化されたアディアバティック量子コンピューティングと呼ばれる ハイブリッドアプローチを実装します
  • 超伝導システムでの能力を実証する

主な方法:

  • 超伝導プラットフォームで デジタル化されたアディアバティック量子コンピューティングを実装した.
  • 9つの量子ビットと1,000個の量子論理ゲートを利用した.
  • デジタル化した進化過程でトモグラフィー検査を行い,エラースケーリングを分析した.

主要な成果:

  • デジタルアプローチでアディアバティックアルゴリズムをシミュレートしました.
  • 一次元のイッシング問題と複合相互作用のハミルトン式を解決した.
  • 固体システムにおけるデジタル化されたアディアバティック量子コンピューティングの実現可能性を示した.

結論:

  • デジタル化されたアディアバティック量子コンピューティングは,一般的な適用性とハードウェアの制約の間のギャップを埋めます.
  • このアプローチは,長距離相関の合成と複雑な計算問題の解決を可能にします.
  • 欠陥耐性との統合は 拡張可能な汎用量子アルゴリズムを約束します