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相关概念视频

Double Resonance Techniques: Overview01:12

Double Resonance Techniques: Overview

240
Double resonance techniques in Nuclear Magnetic Resonance (NMR) spectroscopy involve the simultaneous application of two different frequencies or radiofrequency pulses to manipulate and observe two distinct nuclear spins. One important application of double resonance is spin decoupling, which selectively suppresses coupling with one type of nucleus while observing the NMR signal from another nucleus, simplifying the spectrum and enhancing resolution.
Spin decoupling is usually achieved by...
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The de Broglie Wavelength02:32

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In the macroscopic world, objects that are large enough to be seen by the naked eye follow the rules of classical physics. A billiard ball moving on a table will behave like a particle; it will continue traveling in a straight line unless it collides with another ball, or it is acted on by some other force, such as friction. The ball has a well-defined position and velocity or well-defined momentum, p = mv, which is defined by mass m and velocity v at any given moment. This is the typical...
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相关实验视频

Updated: Jul 15, 2025

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

Published on: May 30, 2014

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通过时间量子除来探测亚秒级延迟.

Fabrizio Sgobba1, Andrea Andrisani1, Stefano Dello Russo1

  • 1Italian Space Agency (ASI), Centro Spaziale 'Giuseppe Colombo', Località Terlecchia, 75100 Matera, Italy.

Sensors (Basel, Switzerland)
|September 28, 2023
PubMed
概括
此摘要是机器生成的。

我们使用量子干涉测量开发了一种敏感的单光子传感器. 这种技术提高了用于生物传感和光学计量学应用的相位灵敏度.

关键词:
香港-Ou-曼德尔干涉测量仪干涉测量仪极化纠 两极分化纠量子 eraser 是一个量子 eraser.

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相关实验视频

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

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科学领域:

  • 量子光学是一种量子光学.
  • 光子学 是一个光子学.
  • 光学传感传感器是什么?

背景情况:

  • 传统的Hong-Ou-Mandel (HOM) 干涉测量是一种强大的单光子技术,但对相位不匹配不敏感.
  • 现有的方法缺乏生物传感和光学计量等应用所需的灵敏度,特别是在低光条件下.

研究的目的:

  • 开发一种高度灵敏的单光子传感器,用于测量双折引起的延迟.
  • 为了提高HOM干扰度的灵敏度,同时保持其坚固性.
  • 为了实现低光应用的相位敏感测量.

主要方法:

  • 实现了一个基于通路的Hong-Ou-Mandel干扰测量的时间量子 eraser.
  • 引入了一种依赖于偏振的后光束分离器延迟,以恢复相位敏感的边缘.
  • 在电信范围 (1550 nm) 操作传感器.

主要成果:

  • 在 2 × 10^4 秒的整合时间内,获得了 4 attosecond (as) 的灵敏度.
  • 展示了一种相位敏感的时间量子 eraser.
  • 保持了原始HOM干扰仪的坚固性,并提高了灵敏度.

结论:

  • 开发的传感器提供了高灵敏度,用于测量双断引发的延迟.
  • 这种技术对生物传感和光学计量学的应用具有前景,这些应用需要高灵敏度和低光强度.
  • 带有时间量子 eraser 的通路 HOM 干扰度为先进的光学传感提供了一个强大的平台.