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相关概念视频

Quantum Numbers02:43

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It is said that the energy of an electron in an atom is quantized; that is, it can be equal only to certain specific values and can jump from one energy level to another but not transition smoothly or stay between these levels.
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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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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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The nature of light has been a subject of inquiry since antiquity. In the seventeenth century, Isaac Newton performed experiments with lenses and prisms and was able to demonstrate that white light consists of the individual colors of the rainbow combined together. Newton explained his optics findings in terms of a "corpuscular" view of light, in which light was composed of streams of extremely tiny particles traveling at high speeds according to Newton's laws of motion. 
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Spin systems where the difference in chemical shifts of the coupled nuclei is greater than ten times J are called first-order spin systems. These nuclei are weakly coupled, and their chemical shifts and coupling constant can generally be estimated from the well-separated signals in the spectrum.
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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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Gradient Echo Quantum Memory in Warm Atomic Vapor
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基于模式的量子文本水印:通过下一代量子技术保护数字内容.

Zheng Xing1, Xiaochen Yuan1, Chan-Tong Lam1

  • 1Faculty of Applied Sciences, Macao Polytechnic University, Macao, China.

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|December 9, 2024
PubMed
概括
此摘要是机器生成的。

本研究介绍了通用量子文本表示 (GQTR) 模型和基于多尺度模式的量子文本水印 (MPQTW) 方案,以使用先进的量子方法保护数字文本版权.

关键词:
物理 物理学 物理量子物理学的量子物理学

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科学领域:

  • 量子计算是一种量子计算.
  • 信息安全 信息安全
  • 数字水印是指数字水印.

背景情况:

  • 数字文本版权保护是一个日益关注的问题.
  • 现有的水印技术面临着局限性.
  • 量子方法为增强安全提供了新的解决方案.

研究的目的:

  • 为英语文本提出一个通用的量子文本表示 (GQTR) 模型.
  • 开发一个基于多尺度模式的量子文本水印 (MPQTW) 方案,用于版权保护.
  • 评估拟议的水标方案的有效性和性能.

主要方法:

  • 开发一个通用的量子文本表示 (GQTR) 模型.
  • 一个基于多尺度模式的量子文本水标 (MPQTW) 方案的设计.
  • 对于GQTR和MPQTW的量子电路的详细设计.
  • 使用不可察觉性,强度和嵌入率的指标进行评估.

主要成果:

  • GQTR模型准确地表示和检索字符,单词和文本.
  • MPQTW方案成功地将多尺度图像嵌入到量子文本中.
  • 拟议的方案在不可察觉性,稳定性和嵌入率方面表现良好.

结论:

  • 拟议的GQTR模型对于量子文本表示是有效的.
  • 该MPQTW方案提供了一个可行的解决方案,以确保数字文本的版权.
  • 量子水印为未来的数字安全应用提供了一个有希望的途径.