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Phase Contrast and Differential Interference Contrast Microscopy01:26

Phase Contrast and Differential Interference Contrast Microscopy

Phase-Contrast Microscopes
In-phase-contrast microscopes, interference between light directly passing through a cell and light refracted by cellular components is used to create high-contrast, high-resolution images without staining. It is the oldest and simplest type of microscope that creates an image by altering the wavelengths of light rays passing through the specimen. Altered wavelength paths are created using an annular stop in the condenser. The annular stop produces a hollow cone of...
¹³C NMR: Distortionless Enhancement by Polarization Transfer (DEPT)01:20

¹³C NMR: Distortionless Enhancement by Polarization Transfer (DEPT)

When proton-coupled carbon-13 spectra are simplified by a broadband proton decoupling technique, structural information about the coupled protons is lost. Distortionless enhancement by polarization transfer (DEPT) is a technique that provides information on the number of hydrogens attached to each carbon in a molecule. While the DEPT experiment utilizes complex pulse sequences, the pulse delay and flip angle are specifically manipulated. The resulting signals have different phases depending on...

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Updated: May 18, 2026

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

量子強化光学相追跡装置

Hidehiro Yonezawa1, Daisuke Nakane, Trevor A Wheatley

  • 1Department of Applied Physics, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan.

Science (New York, N.Y.)
|September 22, 2012
PubMed
まとめ
この要約は機械生成です。

研究者は,標準の量子限界を超えた光学相追跡精度を向上させました. 彼らは相圧縮光を使用し,従来の方法と比較して誤差を15%削減しました.

さらに関連する動画

A Protocol for Real-time 3D Single Particle Tracking
10:16

A Protocol for Real-time 3D Single Particle Tracking

Published on: January 3, 2018

3D Orbital Tracking in a Modified Two-photon Microscope: An Application to the Tracking of Intracellular Vesicles
11:28

3D Orbital Tracking in a Modified Two-photon Microscope: An Application to the Tracking of Intracellular Vesicles

Published on: October 1, 2014

関連する実験動画

Last Updated: May 18, 2026

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

A Protocol for Real-time 3D Single Particle Tracking
10:16

A Protocol for Real-time 3D Single Particle Tracking

Published on: January 3, 2018

3D Orbital Tracking in a Modified Two-photon Microscope: An Application to the Tracking of Intracellular Vesicles
11:28

3D Orbital Tracking in a Modified Two-photon Microscope: An Application to the Tracking of Intracellular Vesicles

Published on: October 1, 2014

科学分野:

  • 量子光学とは,量子光学である.
  • メトロロジー・メトロロジー
  • 光学通信は,光学通信である.

背景:

  • 光学相追跡は,計測学と光通信において極めて重要です.
  • コヘラント光の量子真空の変動は,以前は追跡精度を制限していました.

研究 の 目的:

  • 光学相追跡におけるコヒーレント状態の限界を超えること.
  • 強化メトロロジーのための相圧縮量子状態の使用を調査する.

主な方法:

  • 連続波束を相圧縮量子状態で使った.
  • 最大限の精度のために圧縮の度合いを最適化しました.

主要な成果:

  • コヘラント状態の限界を超えた追跡精度を達成しました.
  • 平均平方誤差の15 ± 4%の減少を示した.
  • 見つかった最適な精度は,有限な圧縮度で発生します.

結論:

  • フェーズ圧縮状態は,優れた光学フェーズ追跡を提供します.
  • この方法は,以前の圧縮強化メトロロジー技術の限界を克服しています.