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The Quantum-Mechanical Model of an Atom02:45

The Quantum-Mechanical Model of an Atom

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...
Emission Spectra02:39

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When solids, liquids, or condensed gases are heated sufficiently, they radiate some of the excess energy as light. Photons produced in this manner have a range of energies, and thereby produce a continuous spectrum in which an unbroken series of wavelengths is present.
The de Broglie Wavelength02:32

The de Broglie Wavelength

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 Bohr Model02:18

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Following the work of Ernest Rutherford and his colleagues in the early twentieth century, the picture of atoms consisting of tiny dense nuclei surrounded by lighter and even tinier electrons continually moving about the nucleus was well established. This picture was called the planetary model since it pictured the atom as a miniature “solar system” with the electrons orbiting the nucleus like planets orbiting the sun. The simplest atom is hydrogen, consisting of a single proton as the nucleus...
Molecular Spectroscopy: Absorption and Emission01:14

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Molecules possess discrete energy levels called quantum states. Unlike atoms, which have simpler energy levels, molecules possess additional rotational and vibrational energy levels. Each energy level is separated by an energy gap, with the gaps between adjacent electronic, vibrational, and rotational levels varying significantly. The three types of energy levels in a diatomic molecule are shown in Figure 1.
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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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Quantum State Engineering of Light with Continuous-wave Optical Parametric Oscillators
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Caracterización completa de los procesos ópticos cuánticos.

Mirko Lobino1, Dmitry Korystov, Connor Kupchak

  • 1Institute for Quantum Information Science, University of Calgary, Calgary, Alberta T2N 1N4, Canada.

Science (New York, N.Y.)
|September 27, 2008
PubMed
Resumen
Este resumen es generado por máquina.

Los investigadores desarrollaron un nuevo método de caracterización de procesos ópticos cuánticos. Esta técnica utiliza la tomografía homodina para evaluar con precisión los dispositivos cuánticos, lo que permite aplicaciones avanzadas de información y control cuántico.

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Área de la Ciencia:

  • La óptica cuántica es una óptica cuántica.
  • La ciencia de la información cuántica es una ciencia cuántica.
  • El control cuántico es el control cuántico.

Sus antecedentes:

  • Las tecnologías cuánticas requieren una caracterización precisa de los procesos internos.
  • Es posible que los métodos actuales no ofrezcan una evaluación completa de las operaciones de los dispositivos cuánticos.

Objetivo del estudio:

  • Presentar un método versátil para caracterizar cualquier proceso óptico cuántico con alta precisión.
  • Para permitir la plena explotación de la información cuántica avanzada y las tecnologías de control.

Principales métodos:

  • Utilizando la tomografía homodina para analizar el efecto de un proceso cuántico.
  • Aplicar el protocolo a un conjunto de estados coherentes (campos clásicos).
  • Verificación experimental del método mediante un proceso de prueba en vacío comprimido.

Principales resultados:

  • Demostró un método para la caracterización arbitrariamente precisa de los procesos ópticos cuánticos.
  • Recuperado con éxito el conocimiento completo del efecto de un proceso de prueba en el vacío comprimido.
  • Validar la capacidad del protocolo a través de la verificación experimental.

Conclusiones:

  • El método presentado ofrece una solución robusta para la caracterización completa de procesos cuánticos.
  • Esta técnica es crucial para avanzar en las capacidades de la información cuántica y los sistemas de control.
  • La evaluación precisa de los dispositivos cuánticos es clave para desbloquear todo su potencial.