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関連する概念動画

Subatomic Particles03:37

Subatomic Particles

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.
The Uncertainty Principle04:08

The Uncertainty Principle

Werner Heisenberg considered the limits of how accurately one can measure properties of an electron or other microscopic particles. He determined that there is a fundamental limit to how accurately one can measure both a particle’s position and its momentum simultaneously. The more accurate the measurement of the momentum of a particle is known, the less accurate the position at that time is known and vice versa. This is what is now called the Heisenberg uncertainty principle. He mathematically...
The Pauli Exclusion Principle03:06

The Pauli Exclusion Principle

The arrangement of electrons in the orbitals of an atom is called its electron configuration. We describe an electron configuration with a symbol that contains three pieces of information:
Atomic Nuclei: Nuclear Spin State Overview01:03

Atomic Nuclei: Nuclear Spin State Overview

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 one, the...
¹H NMR Signal Multiplicity: Splitting Patterns01:13

¹H NMR Signal Multiplicity: Splitting Patterns

When protons A and X are coupled, their nuclear spin energy levels are slightly modified. This is because the energy required to excite proton A to a spin state parallel to proton X is slightly different from the energy required for it to become anti-parallel to spin X. Consequently, there are two possible excitation frequencies for A (A1 and A2), depending on the spin state of X, and vice versa. The mutual nature of coupling implies that the difference between frequencies A1 and A2, indicated...
Electron Behavior01:09

Electron Behavior

Electrons are negatively charged subatomic particles attracted to and orbit around the positively-charged nucleus of an atom. They reside in spaces associated with energy levels called shells and are further organized into subshells and orbitals within each shell.
Electrons Orbit the Nucleus
Electrons are found in specific locations outside of the nucleus. The shell in which an electron resides indicates the general energy level of the electron: those closer to the nucleus have less energy,...

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関連する実験動画

Updated: Jul 11, 2026

Setting Limits on Supersymmetry Using Simplified Models
07:46

Setting Limits on Supersymmetry Using Simplified Models

Published on: November 15, 2013

2つの超伝導量子ビットのマクロスコープの量子状態が絡み合っている.

A J Berkley1, H Xu, R C Ramos

  • 1Center for Superconductivity Research, Department of Physics, University of Maryland, College Park, MD 20742, USA. berkley@physics.umd.edu

Science (New York, N.Y.)
|May 17, 2003
PubMed
まとめ

研究者は,2つのジョセフソン・ジャンクション・キュービットで絡み合ったマクロスコピック量子状態を作り出した. これは,バイアス電流によって制御され,マイクロ波スペクトロスコピーによって確認された0.7ミリメートルの距離での絡み合いを示しています.

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A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference
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A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference

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Isotopic Effect in Double Proton Transfer Process of Porphycene Investigated by Enhanced QM/MM Method
05:51

Isotopic Effect in Double Proton Transfer Process of Porphycene Investigated by Enhanced QM/MM Method

Published on: July 19, 2019

関連する実験動画

Last Updated: Jul 11, 2026

Setting Limits on Supersymmetry Using Simplified Models
07:46

Setting Limits on Supersymmetry Using Simplified Models

Published on: November 15, 2013

A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference
07:56

A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference

Published on: September 5, 2019

Isotopic Effect in Double Proton Transfer Process of Porphycene Investigated by Enhanced QM/MM Method
05:51

Isotopic Effect in Double Proton Transfer Process of Porphycene Investigated by Enhanced QM/MM Method

Published on: July 19, 2019

科学分野:

  • 量子物理学とは,量子物理学のことです.
  • 超伝導回路は,超伝導回路である.

背景:

  • ジョセフソン・ジャンクション・クビット (Josephson-junction qubits) は,量子コンピューティングにおける基本的な単位である.
  • キュービット間の相互作用を制御することは,絡み合った状態を生み出すために非常に重要です.

研究 の 目的:

  • カップルされたジョセフソン・ジャンクション・キュービットで絡み合ったマクロスコーピック量子状態の生成を実証する.
  • バイアス電流を用いた量子ビット相互作用の制御を調査する.

主な方法:

  • コンデンサを介してカップリングされた2つの電流バイアスのジョセフソン・ジャンクション・クビットを使用しました.
  • エネルギーレベルを検出するために20ミリケルビンでマイクロ波スペクトル (4-6 GHz) を使った.
  • キュービット相互作用と共鳴を制御するために,個々の交差点バイアス電流を多様化します.

主要な成果:

  • 顕微鏡の証拠は,絡み合ったマクロスコープの量子状態の創造を確認した.
  • 観測されたエネルギーレベルは,絡み合った状態の理論的予測と密接に一致しました.
  • 絡み合った状態は,量子ビット間の0.7ミリメートルの空間的な分離で維持された.

結論:

  • 空間的に分離されたマクロスコプ的量子システムにおける絡み合いを成功裏に実証した.
  • バイアス電流制御は,量子ビット相互作用をチューニングし,エンタグリングを達成するための実行可能な方法を提供します.
  • この発見は,量子情報処理のための超伝導量子ビットのスケーラビリティをサポートしています.