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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...
Interference and Superposition of Waves01:07

Interference and Superposition of Waves

When two waves of the same nature occur in the same region simultaneously, they result in interference. Interference of waves implies that the net effect of the waves is the sum of the individual waves' effects. However, it does not imply that the individual waves affect the propagation of other waves.
Interference occurs in mechanical waves, such as sound waves, waves on a string, and surface water waves. Mechanical waves correspond to the physical displacement of particles. Hence,...
¹H NMR: Interpreting Distorted and Overlapping Signals01:02

¹H NMR: Interpreting Distorted and Overlapping Signals

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.
As Δν decreases and the signals move closer, the doublets appear increasingly distorted. The intensities of the inner lines increase at the cost of those of the outer lines as the signals are slanted or...
The Pauli Exclusion Principle03:06

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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:
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...
The Quantum-Mechanical Model of an Atom02:45

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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. Schrödinger...

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Measurement of Quantum Interference in a Silicon Ring Resonator Photon Source
12:19

Measurement of Quantum Interference in a Silicon Ring Resonator Photon Source

Published on: April 4, 2017

Excluyendo la interferencia de varios órdenes en la mecánica cuántica.

Urbasi Sinha1, Christophe Couteau, Thomas Jennewein

  • 1Institute for Quantum Computing and Department of Physics and Astronomy, University of Waterloo, 200 University Avenue West, Waterloo, Ontario N2L 3G1, Canada. usinha@iqc.ca

Science (New York, N.Y.)
|July 24, 2010
PubMed
Resumen
Este resumen es generado por máquina.

Este estudio probó una regla clave de la mecánica cuántica utilizando un experimento de tres ranuras. Los resultados muestran que la interferencia de orden superior es insignificante, lo que respalda la precisión de Born.

Videos de Experimentos Relacionados

Last Updated: Jun 10, 2026

Measurement of Quantum Interference in a Silicon Ring Resonator Photon Source
12:19

Measurement of Quantum Interference in a Silicon Ring Resonator Photon Source

Published on: April 4, 2017

Área de la Ciencia:

  • La física cuántica es la física cuántica.
  • Los fundamentos de la mecánica cuántica.

Sus antecedentes:

  • La mecánica cuántica y la gravitación son teorías fundamentales pero incompatibles en la física.
  • La unificación puede requerir la generalización de las teorías existentes, violando potencialmente la regla de Born.
  • La regla de Born predice la interferencia de pares de caminos, una piedra angular de la mecánica cuántica.

Objetivo del estudio:

  • Investigar experimentalmente la posibilidad de interferencia multipath más allá de pares de caminos.
  • Para probar la validez de la regla de Born en la mecánica cuántica.
  • Para poner límites a los fenómenos de interferencia de orden superior.

Principales métodos:

  • Realizó un experimento de fotones utilizando una configuración de tres ranuras.
  • Se midió y se cuantificó la contribución de la interferencia de tres vías.
  • Los resultados experimentales comparados con las predicciones de la mecánica cuántica estándar.

Principales resultados:

  • Limitó la magnitud de la interferencia de tres vías a menos de 10−2 de la interferencia de dos vías.
  • Se descartaron efectos de interferencia significativos de tercer y más alto orden.
  • El experimento confirmó la consistencia con la regla de Born tanto en los regímenes semiclásicos como en los cuánticos.

Conclusiones:

  • El experimento proporciona una fuerte evidencia en contra de la mecánica cuántica generalizada que permite una interferencia múltiple significativa.
  • Los resultados establecen límites estrictos para las desviaciones de la regla de Born.
  • Los hallazgos apoyan la exactitud de la formulación actual de la mecánica cuántica.