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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

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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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Ampere-Maxwell's Law: Problem-Solving01:17

Ampere-Maxwell's Law: Problem-Solving

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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...
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Electronic Structure of Atoms02:28

Electronic Structure of Atoms

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An atom comprises protons and neutrons, which are contained inside the dense, central core called the nucleus, with electrons present around the nucleus. Taking into account the wave–particle duality of electrons and the uncertainty in position around the nucleus, quantum mechanics provides a more accurate model for the atomic structure. It describes atomic orbitals as the regions around the nucleus where electrons of discrete energy exist, characterized by four quantum...
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Atomic Nuclei: Nuclear Spin State Overview01:03

Atomic Nuclei: Nuclear Spin State Overview

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NMR-active nuclei have energy levels called 'spin states' that are associated with the orientations of their nuclear magnetic moments. In the absence of a magnetic field, the nuclear magnetic moments are randomly oriented, and the spin states are degenerate. When an external magnetic field is applied, the spin states have only 2 + 1 orientations available to them. A proton with = ½ has two available orientations. Similarly, for a quadrupolar nucleus with a nuclear spin value of...
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Subatomic Particles03:37

Subatomic Particles

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Dalton was only partially correct about the particles that make up matter. All matter is composed of atoms, and atoms are composed of three smaller subatomic particles: protons, neutrons, and electrons. These three particles account for the mass and the charge of an atom.
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Phasor Arithmetics01:13

Phasor Arithmetics

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Phasors and their corresponding sinusoids are interrelated, offering unique insights into the behavior of alternating current (AC) circuits. One way to understand this relationship is through the operations of differentiation and integration in both the time and phasor domains.
When the derivative of a sinusoid is taken in the time domain, it transforms into its corresponding phasor multiplied by j-omega (jω) in the phasor domain, where j is the imaginary unit, and ω is the angular...
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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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再構成可能な原子配列に基づく論理量子プロセッサ

Dolev Bluvstein1, Simon J Evered1, Alexandra A Geim1

  • 1Department of Physics, Harvard University, Cambridge, MA, USA.

Nature
|December 6, 2023
PubMed
まとめ
この要約は機械生成です。

研究者はコード化された論理量子ビットを使って プログラム可能な量子プロセッサを開発し 量子エラーの修正を大幅に改善しました この進歩は,ゲートフィデリティとアルゴリズムのパフォーマンスを向上させることで,大規模な量子コンピューティングの重要な課題を克服します.

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Scalable Quantum Integrated Circuits on Superconducting Two-Dimensional Electron Gas Platform
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Generation and Coherent Control of Pulsed Quantum Frequency Combs
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Generation and Coherent Control of Pulsed Quantum Frequency Combs

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関連する実験動画

Last Updated: Jul 9, 2025

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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Scalable Quantum Integrated Circuits on Superconducting Two-Dimensional Electron Gas Platform
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Generation and Coherent Control of Pulsed Quantum Frequency Combs
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科学分野:

  • 量子情報科学
  • 量子コンピューティング
  • 量子エラー 修正

背景:

  • 誤差を抑制することは有用な量子コンピューティングに不可欠であり,量子エラー補正 (QEC) を必要とします.
  • 誤り修正された論理量子ビットのオーバーヘッドは,大規模量子計算の大きな障害となっています.
  • 既存の量子プロセッサは,高精度およびQECのスケーラビリティを達成する上で課題に直面しています.

研究 の 目的:

  • プログラミング可能な量子プロセッサを 暗号化された論理量子ビットで実現する
  • 量子エラー修正能力とアルゴリズムの性能を向上させるため
  • 論理量子ビットの実現に伴う オーバーヘッドの課題を克服するために

主な方法:

  • 中性原子配列を用いた最大280個の物理量子ビットを持つプログラム可能な量子プロセッサの開発.
  • ロジカルレベルの制御,ゾーン化されたアーキテクチャ,任意の接続性の実装.
  • 表面コードとカラーコードを含む様々なエンコーディングスキームを利用してエラーを修正する.

主要な成果:

  • 表面コード距離をスケールすることで 2 キビットゲートフィデリティの改善が示されました.
  • カラーコードの量子ビットと論理的なGHZ状態の故障耐久性の作成を達成しました.
  • 48個の論理量子ビットを持つ複雑なサンプリング回路を成功裏に実行し,物理的な量子ビットの信頼性を上回ります.

結論:

  • 開発された論理量子プロセッサは,エラー検出でアルゴリズムのパフォーマンスを大幅に向上させます.
  • この研究は,初期に誤り修正された量子計算への重要な一歩を示しています.
  • この発見は,大規模な論理量子プロセッサの開発のための明確な道筋を提供します.