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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

42.4K
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.
42.4K
The Bohr Model02:18

The Bohr Model

54.6K
Following the work of Ernest Rutherford and his colleagues in the early twentieth century, the picture of atoms consisting of tiny dense nuclei surrounded by lighter and even tinier electrons continually moving about the nucleus was well established. This picture was called the planetary model since it pictured the atom as a miniature “solar system” with the electrons orbiting the nucleus like planets orbiting the sun. The simplest atom is hydrogen, consisting of a single proton as...
54.6K
Emission Spectra02:39

Emission Spectra

53.6K
When solids, liquids, or condensed gases are heated sufficiently, they radiate some of the excess energy as light. Photons produced in this manner have a range of energies, and thereby produce a continuous spectrum in which an unbroken series of wavelengths is present.
53.6K
NMR Spectrometers: Resolution and Error Correction01:14

NMR Spectrometers: Resolution and Error Correction

705
When magnetic nuclei in a sample achieve resonance and undergo relaxation, the signal detected in NMR is an approximately exponential free induction decay. Fourier transform of an exponential decay yields a Lorentzian peak in the frequency domain. Lorentzian peaks in an NMR spectrum are defined by their amplitude, full width at half maximum, and position, where the peak width is governed by the spin-spin relaxation time alone. In real experiments, however, the applied magnetic field is rendered...
705
Deactivation Processes: Jablonski Diagram01:25

Deactivation Processes: Jablonski Diagram

696
Luminescence, the emission of light by a substance that has absorbed energy, is a process that involves the interaction of molecules with light. The energy-level diagram, or Jablonski diagram, is a graphical representation of these interactions, illustrating the various states and transitions a molecule can undergo. In a typical Jablonski diagram, the lowest horizontal line represents the ground-state energy of the molecule, which is usually a singlet state. This state represents the energies...
696
π Electron Effects on Chemical Shift: Overview01:27

π Electron Effects on Chemical Shift: Overview

1.1K
An applied magnetic field causes loosely bound π-electrons in organic molecules to circulate, producing a local or induced diamagnetic field over a large spatial volume. As the molecules tumble in solution, the field generated by π-electrons in spherical substituents results in a zero net field. However, the net field generated by π-electrons in non-spherical substituents is not zero. The effect of this induced field depends on the orientation of the molecule with respect to B0,...
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関連する実験動画

Updated: Jul 13, 2025

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

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高精度ライドバーグ量子シミュレータでの消去変換

Pascal Scholl1, Adam L Shaw1, Richard Bing-Shiun Tsai1

  • 1California Institute of Technology, Pasadena, CA, USA.

Nature
|October 11, 2023
PubMed
まとめ

研究者らは,リッドバーグ原子配列における消去変換と高精度ベル状態生成を実証し,騒々しい中間スケール量子 (NISQ) デバイスの量子エラー修正を改善し,故障耐性量子計算を進めている.

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Quantum State Engineering of Light with Continuous-wave Optical Parametric Oscillators
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Quantum State Engineering of Light with Continuous-wave Optical Parametric Oscillators

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Silicon Metal-oxide-semiconductor Quantum Dots for Single-electron Pumping
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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: Jul 13, 2025

Gradient Echo Quantum Memory in Warm Atomic Vapor
10:00

Gradient Echo Quantum Memory in Warm Atomic Vapor

Published on: November 11, 2013

12.9K
Quantum State Engineering of Light with Continuous-wave Optical Parametric Oscillators
09:23

Quantum State Engineering of Light with Continuous-wave Optical Parametric Oscillators

Published on: May 30, 2014

14.6K
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

14.7K

科学分野:

  • 量子情報科学
  • 原子物理学
  • 量子コンピューティング

背景:

  • 誤差を最小限に抑えることは,量子科学,特に騒々しい中間スケール量子 (NISQ) デバイスと故障耐性量子計算において極めて重要です.
  • Rydbergの原子配列は量子コンピューティングにとって有望なプラットフォームですが,2量子ビットの絡み合いの信頼性は歴史的に遅れています
  • 単原子解像度でリークエラーを検出することは,消去変換によるエラー修正の改善への道を提供します.

研究 の 目的:

  • リッドバーグ原子配列における消去変換と高精度ベル状態生成を実証する.
  • 量子シミュレーションの結果に対する消去変換の影響を評価する.
  • NISQデバイスと量子エラー補正のためのこれらの技術の可能性を示す.

主な方法:

  • 素土原子のライドバーグ量子シミュレータを使って 素早く画像とエラーを検出した
  • 消去したデータを消去する.
  • ベル状態を生成し,状態準備エラーの修正と修正なしの両方でその忠誠度を測定した.

主要な成果:

  • [Formula: テキストを参照]のベル状態フィデリティを達成し,状態準備エラーを修正した後に[Formula: テキストを参照]に改善しました.
  • フェーズトランジションの量子シミュレーションで エラー変換を成功裏に実施し,エラーの影響を明らかにした.
  • Rydbergベースのエンタグリングフィデリティが0.999のレジムに近づいていることが示されています.

結論:

  • 量子エラー補正に適した高精度エンタグリングを実現します.
  • 消去変換は,NISQデバイスのエラーを軽減するための実行可能な技術です.
  • これらの方法は,長寿命の量子ビットを持つ量子エラー修正コードに拡張できます.